corpus.blog
41554 blogs · [ { "id": "01a0d830-f7b8-70d8-8420-ca71053821b7", "title": "Why not everyone on the left thinks trans women in women’s sports is always a great idea", "url": "https://entropymine.wordpress.com/2026/09/22/why-not-everyone-on-the-left-thinks-trans-women-in-womens-sports-is-always-a-great-idea/", "published_at": "2026-09-22T19:20:02+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4ac090461", "title": "PKLITE supplement 9: Min/max alloc. part 4", "url": "https://entropymine.wordpress.com/2026/08/19/pklite-supplement-9-min-max-alloc-part-4/", "published_at": "2026-08-19T19:32:04+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4acf32553", "title": "PKLITE supplement 8: Min/max alloc. part 3", "url": "https://entropymine.wordpress.com/2026/07/20/pklite-supplement-8-min-max-alloc-part-3/", "published_at": "2026-07-20T15:32:10+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4ad91ece8", "title": "The boy born on Tuesday puzzle", "url": "https://entropymine.wordpress.com/2026/06/11/the-boy-born-on-tuesday-puzzle/", "published_at": "2026-06-11T19:04:34+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4ae871622", "title": "The universe is very, very fine-tuned", "url": "https://entropymine.wordpress.com/2026/05/25/the-universe-is-very-very-fine-tuned/", "published_at": "2026-05-25T17:37:08+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4af4530a8", "title": "PKLITE supplement 7: Min/max alloc. part 2", "url": "https://entropymine.wordpress.com/2026/04/24/pklite-supplement-7-min-max-alloc-part-2/", "published_at": "2026-04-24T18:30:56+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4b0075c62", "title": "PKLITE supplement 6: Min/max alloc., part 1", "url": "https://entropymine.wordpress.com/2026/04/05/pklite-supplement-6-min-max-alloc-part-1/", "published_at": "2026-04-05T15:50:22+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4b0c12cad", "title": "Spacemaker executable compression", "url": "https://entropymine.wordpress.com/2026/03/23/spacemaker-executable-compression/", "published_at": "2026-03-23T14:57:09+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4b156a079", "title": "The easiest unsolved math problem", "url": "https://entropymine.wordpress.com/2026/02/24/the-easiest-unsolved-math-problem/", "published_at": "2026-02-24T14:58:00+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4b1aee50b", "title": "Details of Okumura’s LZSS compression", "url": "https://entropymine.wordpress.com/2026/01/23/details-of-okumuras-lzss-compression/", "published_at": "2026-01-23T13:44:33+00:00" }, { "id": "01a08774-2e4d-71fe-962b-32f4b2098f05", "title": "Notes on PFS:First Publisher ART format", "url": "https://entropymine.wordpress.com/2025/12/29/notes-on-pfsfirst-publisher-art-format/", "published_at": "2025-12-29T14:38:57+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d658be03c3e", "title": "My two cents, rounded down, on pennies", "url": "https://entropymine.wordpress.com/2025/11/25/my-two-cents-rounded-down-on-pennies/", "published_at": "2025-11-25T19:44:03+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d658ca638ac", "title": "The dates of earliest sunset and latest sunrise", "url": "https://entropymine.wordpress.com/2025/10/21/the-dates-of-earliest-sunset-and-latest-sunrise/", "published_at": "2025-10-21T18:41:08+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d658d952e99", "title": "Notes on CompuShow", "url": "https://entropymine.wordpress.com/2025/09/18/notes-on-compushow/", "published_at": "2025-09-18T18:58:30+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d658dc51a74", "title": "Notes on ZIP format and disk spanning", "url": "https://entropymine.wordpress.com/2025/08/25/notes-on-zip-format-and-disk-spanning/", "published_at": "2025-08-25T19:33:22+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d658e37b97f", "title": "The supernovas that get no respect", "url": "https://entropymine.wordpress.com/2025/07/22/the-supernovas-that-get-no-respect/", "published_at": "2025-07-22T14:50:35+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d658f05c11c", "title": "The “file” command: annotations", "url": "https://entropymine.wordpress.com/2025/06/25/the-file-command-annotations/", "published_at": "2025-06-25T19:25:03+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d658fa41a2f", "title": "The “file” command: binary and text files", "url": "https://entropymine.wordpress.com/2025/05/22/the-file-command-binary-and-text-files/", "published_at": "2025-05-22T19:45:23+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d65906d79f6", "title": "Notes on PKLITE, supplement 5: Another beta version found", "url": "https://entropymine.wordpress.com/2025/04/11/notes-on-pklite-supplement-5-another-beta-version-found/", "published_at": "2025-04-11T17:59:25+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d659078637d", "title": "Classifying EXEPACK-compressed files", "url": "https://entropymine.wordpress.com/2025/03/01/classifying-exepack-compressed-files/", "published_at": "2025-03-01T15:30:11+00:00" }, { "id": "01a0c50b-2b08-7060-a706-6d65912b9ff9", "title": "Analyzing some encrypted ARJ archives", "url": "https://entropymine.wordpress.com/2025/02/06/analyzing-some-encrypted-arj-archives/", "published_at": "2025-02-06T14:20:51+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8a45ee40", "title": "MHD: A multi-file hex dump utility", "url": "https://entropymine.wordpress.com/2025/01/23/mhd-a-multi-file-hex-dump-utility/", "published_at": "2025-01-23T13:26:25+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8b220f92", "title": "The file command and black magic (Part 2)", "url": "https://entropymine.wordpress.com/2024/12/22/the-file-command-and-black-magic-part-2/", "published_at": "2024-12-22T21:59:28+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8be43755", "title": "The file command and black magic (Part 1)", "url": "https://entropymine.wordpress.com/2024/11/04/the-file-command-and-black-magic-part-1/", "published_at": "2024-11-04T14:19:16+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8ce2eec1", "title": "Notes on PKLITE format, supplement 4: Polymorphic code", "url": "https://entropymine.wordpress.com/2024/10/08/notes-on-pklite-format-supplement-4-polymorphic-code/", "published_at": "2024-10-08T11:48:52+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8da3a4ab", "title": "Notes on PKZIP for Windows 3.x", "url": "https://entropymine.wordpress.com/2024/09/24/notes-on-pkzip-for-windows-3-x/", "published_at": "2024-09-24T23:03:54+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8dc8cddc", "title": "A script to analyze magic patterns for the “file” command", "url": "https://entropymine.wordpress.com/2024/08/26/a-script-to-analyze-magic-patterns-for-the-file-command/", "published_at": "2024-08-26T17:37:55+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8e41f4ca", "title": "Notes on writing “magic” patterns for the “file” command", "url": "https://entropymine.wordpress.com/2024/07/28/notes-on-writing-magic-patterns-for-the-file-command/", "published_at": "2024-07-28T16:06:02+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8eb23546", "title": "Making an unsavable ColoRIX image", "url": "https://entropymine.wordpress.com/2024/06/29/making-an-unsavable-colorix-image/", "published_at": "2024-06-29T18:33:41+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8f6f0f4b", "title": "What’s in an “_INST32I.EX_” file?", "url": "https://entropymine.wordpress.com/2024/05/27/whats-in-an-_inst32i-ex_-file/", "published_at": "2024-05-27T11:55:13+00:00" }, { "id": "01a0c51a-ecae-73c1-a88c-f8db8fe88d05", "title": "Some notes on NP and NP-completeness", "url": "https://entropymine.wordpress.com/2024/04/28/some-notes-on-np-and-np-completeness/", "published_at": "2024-04-28T19:22:36+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425952d00e", "title": "Survey of LZW compression schemes", "url": "https://entropymine.wordpress.com/2024/03/27/survey-of-lzw-compression-schemes/", "published_at": "2024-03-27T15:47:46+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425a2f8a2e", "title": "The ground rules of chess problems", "url": "https://entropymine.wordpress.com/2024/02/27/the-ground-rules-of-chess-problems/", "published_at": "2024-02-27T20:41:20+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425a887717", "title": "Notes on bit order", "url": "https://entropymine.wordpress.com/2024/01/28/notes-on-bit-order/", "published_at": "2024-01-28T18:33:51+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425aa808ff", "title": "64-bit BMP image files", "url": "https://entropymine.wordpress.com/2023/12/29/64-bit-bmp-image-files/", "published_at": "2023-12-29T15:46:49+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425b7f2f82", "title": "Making an uncompressed PNG image file", "url": "https://entropymine.wordpress.com/2023/11/28/making-an-uncompressed-png-image-file/", "published_at": "2023-11-28T15:49:12+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425bab6c08", "title": "DIET compressed EXE format", "url": "https://entropymine.wordpress.com/2023/11/11/diet-compressed-exe-format/", "published_at": "2023-11-11T20:05:04+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425bc3ff03", "title": "Remember the 5th of November", "url": "https://entropymine.wordpress.com/2023/11/05/remember-the-5th-of-november/", "published_at": "2023-11-05T13:27:33+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425c87fe33", "title": "How big is a football field?", "url": "https://entropymine.wordpress.com/2023/10/29/how-big-is-a-football-field/", "published_at": "2023-10-29T18:42:14+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425cf616d4", "title": "How big is a light-year?", "url": "https://entropymine.wordpress.com/2023/10/29/how-big-is-a-light-year/", "published_at": "2023-10-29T18:39:52+00:00" }, { "id": "01a0c526-0c51-7185-a937-10425d2f65a0", "title": "The EXE checksum field", "url": "https://entropymine.wordpress.com/2023/09/27/the-exe-checksum-field/", "published_at": "2023-09-27T19:37:36+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f4c6288a", "title": "How DIET compression works", "url": "https://entropymine.wordpress.com/2023/08/15/how-diet-compression-works/", "published_at": "2023-08-15T15:15:41+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f4f6d027", "title": "Compiling lzhuf.c on a modern computer", "url": "https://entropymine.wordpress.com/2023/08/14/compiling-lzhuf-c-on-a-modern-computer/", "published_at": "2023-08-14T14:28:19+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f5e9e1e6", "title": "Notes on PKLITE format, Supplement 3: Checksum", "url": "https://entropymine.wordpress.com/2023/07/18/notes-on-pklite-format-supplement-3-checksum/", "published_at": "2023-07-18T15:29:16+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f650989d", "title": "Fixing a hidden bug in PKZIP 2.04c", "url": "https://entropymine.wordpress.com/2023/06/09/fixing-a-hidden-bug-in-pkzip-2-04c/", "published_at": "2023-06-09T19:56:32+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f6c6e917", "title": "Notes on PKLITE format, Part 7: v1.20 compression", "url": "https://entropymine.wordpress.com/2023/05/11/notes-on-pklite-format-part-6-v1-20-compression/", "published_at": "2023-05-11T16:01:44+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f7500409", "title": "ColoRIX compressed 16-color format", "url": "https://entropymine.wordpress.com/2023/04/28/colorix-compressed-16-color-format/", "published_at": "2023-04-28T14:04:06+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f770f4f8", "title": "ColoRIX compressed image format", "url": "https://entropymine.wordpress.com/2023/04/12/colorix-compressed-image-format/", "published_at": "2023-04-12T19:22:40+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f81b8836", "title": "Win32 I/O character encoding supplement 3: UTF-8 manifest", "url": "https://entropymine.wordpress.com/2023/03/25/win32-i-o-character-encoding-supplement-3-utf-8-manifest/", "published_at": "2023-03-25T14:49:54+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f8a8d048", "title": "Updated survey of LHarc and LHA", "url": "https://entropymine.wordpress.com/2023/02/20/updated-survey-of-lharc-and-lha/", "published_at": "2023-02-20T17:48:26+00:00" }, { "id": "01a0c531-5bbe-736e-ba54-f985f92a3c92", "title": "Notes on SGI image format", "url": "https://entropymine.wordpress.com/2023/01/30/notes-on-sgi-image-format/", "published_at": "2023-01-30T19:06:54+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd979954b0", "title": "Survey of EXPAND/DECOMP utilities", "url": "https://entropymine.wordpress.com/2022/12/27/survey-of-expand-decomp-utilities/", "published_at": "2022-12-27T16:18:42+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd980f084d", "title": "8 billion", "url": "https://entropymine.wordpress.com/2022/11/29/8-billion/", "published_at": "2022-11-29T18:59:58+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd9825d499", "title": "Is faster-than-light communication possible?", "url": "https://entropymine.wordpress.com/2022/10/26/is-faster-than-light-communication-possible/", "published_at": "2022-10-26T14:57:32+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd9851579b", "title": "Notes on PKLITE format, Supplement 1: Descrambling", "url": "https://entropymine.wordpress.com/2022/10/11/notes-on-pklite-format-supplement-1-descrambling/", "published_at": "2022-10-11T19:16:16+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd988d8c64", "title": "ARJ compression method 4", "url": "https://entropymine.wordpress.com/2022/09/25/arj-compression-method-4/", "published_at": "2022-09-25T18:42:14+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd998a9dda", "title": "Survey of RAR comment formats", "url": "https://entropymine.wordpress.com/2022/08/19/survey-of-rar-comment-formats/", "published_at": "2022-08-19T18:34:31+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd9a8074f3", "title": "Which comes first in DOS timestamps, the date or the time?", "url": "https://entropymine.wordpress.com/2022/07/26/which-comes-first-in-dos-timestamps-the-date-or-the-time/", "published_at": "2022-07-26T18:03:04+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd9adc78f6", "title": "How to vote in a late-stage two-party system", "url": "https://entropymine.wordpress.com/2022/07/26/how-to-vote-in-a-late-stage-two-party-system/", "published_at": "2022-07-26T17:30:47+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd9b32df66", "title": "Notes on some old self-extracting ZIP archives", "url": "https://entropymine.wordpress.com/2022/06/27/notes-on-some-old-self-extracting-zip-archives/", "published_at": "2022-06-27T18:28:06+00:00" }, { "id": "01a0c53b-79ec-7381-af27-67dd9be208eb", "title": "Notes on PKLITE format, Part 6", "url": "https://entropymine.wordpress.com/2022/05/09/notes-on-pklite-format-part-6/", "published_at": "2022-05-09T19:32:03+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d1d3ba041", "title": "Notes on PKLITE format, Part 5", "url": "https://entropymine.wordpress.com/2022/05/08/notes-on-pklite-format-part-5/", "published_at": "2022-05-08T19:32:49+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d1d7e98f4", "title": "What is LZSS compression?", "url": "https://entropymine.wordpress.com/2022/04/22/what-is-lzss-compression/", "published_at": "2022-04-22T19:14:46+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d1de4a54b", "title": "Survey of LHarc and LHA versions and names", "url": "https://entropymine.wordpress.com/2022/03/27/survey-of-lharc-and-lha-versions-and-names/", "published_at": "2022-03-27T15:00:30+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d1e39d23c", "title": "Notes on PKLITE format, Part 4", "url": "https://entropymine.wordpress.com/2022/03/05/notes-on-pklite-format-part-4/", "published_at": "2022-03-05T18:17:40+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d1ebdecc4", "title": "Ambiguity of some infinite math expressions", "url": "https://entropymine.wordpress.com/2022/02/23/ambiguity-of-some-infinite-math-expressions/", "published_at": "2022-02-23T20:20:41+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d1f766349", "title": "Notes on PKLITE format, Part 3", "url": "https://entropymine.wordpress.com/2022/01/16/notes-on-pklite-format-part-3/", "published_at": "2022-01-16T17:11:54+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d1fb0e845", "title": "Notes on PKLITE format, Part 2", "url": "https://entropymine.wordpress.com/2022/01/13/notes-on-pklite-format-part-2/", "published_at": "2022-01-13T16:45:00+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d1feb2213", "title": "Notes on PKLITE format, Part 1", "url": "https://entropymine.wordpress.com/2021/12/19/notes-on-pklite-format-part-1/", "published_at": "2021-12-19T17:12:56+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d20d96475", "title": "A quick overview of DOS EXE file format", "url": "https://entropymine.wordpress.com/2021/11/11/a-quick-overview-of-dos-exe-file-format/", "published_at": "2021-11-11T18:22:43+00:00" }, { "id": "01a0c544-8ed3-7042-974b-938d218a36d5", "title": "Testing some LZ77 compression limits", "url": "https://entropymine.wordpress.com/2021/10/07/testing-some-lz77-compression-limits/", "published_at": "2021-10-07T15:29:54+00:00" }, { "id": "01a0c54d-4498-71eb-a82e-d2f020e60f6b", "title": "Ways things can rotate", "url": "https://entropymine.wordpress.com/2021/09/28/ways-things-can-rotate/", "published_at": "2021-09-28T18:29:15+00:00" }, { "id": "01a0c54d-4498-71eb-a82e-d2f021d1dd28", "title": "Differences between females and males", "url": "https://entropymine.wordpress.com/2021/08/29/differences-between-females-and-males/", "published_at": "2021-08-29T17:27:38+00:00" }, { "id": "01a0c54d-4498-71eb-a82e-d2f022bb0d7a", "title": "The “guess what number I’m thinking of” problem", "url": "https://entropymine.wordpress.com/2021/07/28/the-guess-what-number-im-thinking-of-problem/", "published_at": "2021-07-28T15:33:39+00:00" }, { "id": "01a0c54d-4499-73a0-85dd-17d3aa965223", "title": "ARC/PAK’s “Distilled” compression scheme", "url": "https://entropymine.wordpress.com/2021/06/24/arc-paks-distilled-compression-scheme/", "published_at": "2021-06-24T17:45:44+00:00" }, { "id": "01a0c54d-4499-73a0-85dd-17d3ab241be8", "title": "ARC’s “Trimmed” compression scheme", "url": "https://entropymine.wordpress.com/2021/05/11/arcs-trimmed-compression-scheme/", "published_at": "2021-05-11T15:49:48+00:00" }, { "id": "01a0c54d-4499-73a0-85dd-17d3ab3bc3a2", "title": "Win32 I/O character encoding supplement 2 – setlocale enhancement", "url": "https://entropymine.wordpress.com/2021/05/08/win32-i-o-character-encoding-supplement-2-setlocale-enhancement/", "published_at": "2021-05-08T17:43:22+00:00" }, { "id": "01a0c54d-4499-73a0-85dd-17d3ab43d7ef", "title": "The Two Envelopes problem", "url": "https://entropymine.wordpress.com/2021/04/28/the-two-envelopes-problem/", "published_at": "2021-04-28T19:28:24+00:00" }, { "id": "01a0c54d-4499-73a0-85dd-17d3ab810bea", "title": "Making an uncompressed JPEG 2000 file", "url": "https://entropymine.wordpress.com/2021/03/22/making-an-uncompressed-jpeg-2000-file/", "published_at": "2021-03-22T14:59:56+00:00" }, { "id": "01a0c54d-4499-73a0-85dd-17d3ac4dfcd6", "title": "Yes, pi is wrong. Sorry about that.", "url": "https://entropymine.wordpress.com/2021/03/11/yes-pi-is-wrong-sorry-about-that/", "published_at": "2021-03-11T19:04:18+00:00" }, { "id": "01a0c54d-4499-73a0-85dd-17d3ad306b0a", "title": "When a world needs a hero", "url": "https://entropymine.wordpress.com/2021/03/04/when-a-world-needs-a-hero/", "published_at": "2021-03-04T15:29:15+00:00" }, { "id": "01a0c555-cee9-711e-9121-946994a32ddb", "title": "Formulas for “drop”", "url": "https://entropymine.wordpress.com/2021/02/10/formulas-for-drop/", "published_at": "2021-02-10T14:35:59+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d5357c23406", "title": "Encoding Huffman codebooks", "url": "https://entropymine.wordpress.com/2021/01/24/encoding-huffman-codebooks/", "published_at": "2021-01-24T21:06:38+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d5358741ba3", "title": "Notes on LHARK compression format", "url": "https://entropymine.wordpress.com/2020/12/24/notes-on-lhark-compression-format/", "published_at": "2020-12-24T15:33:43+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d53596fc190", "title": "The Cleveland baseball team", "url": "https://entropymine.wordpress.com/2020/12/22/the-cleveland-baseball-team/", "published_at": "2020-12-22T15:54:36+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d535a53d8b3", "title": "The blocksize field in LHA compression format", "url": "https://entropymine.wordpress.com/2020/11/23/the-blocksize-field-in-lha-compression-format/", "published_at": "2020-11-23T19:34:57+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d535af243b8", "title": "Overview of some simple map projections", "url": "https://entropymine.wordpress.com/2020/10/29/overview-of-some-simple-map-projections/", "published_at": "2020-10-29T19:26:20+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d535bb3737d", "title": "LZ77 compression prehistory", "url": "https://entropymine.wordpress.com/2020/09/03/lz77-compression-prehistory/", "published_at": "2020-09-03T15:37:21+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d535bbc1fbe", "title": "An obscure polyglot file: LHA/CAR", "url": "https://entropymine.wordpress.com/2020/08/26/an-obscure-polyglot-file-lha-car/", "published_at": "2020-08-26T13:33:58+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d535bc4c91b", "title": "Earth portrait photos", "url": "https://entropymine.wordpress.com/2020/07/18/earth-portrait-photos/", "published_at": "2020-07-18T15:43:01+00:00" }, { "id": "01a0c555-ceea-7080-94e4-3d535ca3dffe", "title": "Alternative to Cantor’s diagonalization argument", "url": "https://entropymine.wordpress.com/2020/06/14/alternative-to-cantors-diagonalization-argument/", "published_at": "2020-06-14T19:23:05+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b014e848", "title": "Thoughts on timestamps of computer files", "url": "https://entropymine.wordpress.com/2020/05/29/thoughts-on-timestamps-of-computer-files/", "published_at": "2020-05-29T12:39:51+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b089f487", "title": "Win32 I/O character encoding supplement 1 – A Cygwin issue", "url": "https://entropymine.wordpress.com/2020/05/06/win32-i-o-character-encoding-supplement-1-a-cygwin-issue/", "published_at": "2020-05-06T15:15:46+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b0f2db29", "title": "The recent discovery of an ancient bilaterian fossil", "url": "https://entropymine.wordpress.com/2020/04/09/the-recent-discovery-of-an-ancient-bilaterian-fossil/", "published_at": "2020-04-09T18:40:12+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b1cc7b5a", "title": "The World Chess Championship is kinda not so great", "url": "https://entropymine.wordpress.com/2020/03/11/the-world-chess-championship-is-kinda-not-so-great/", "published_at": "2020-03-11T17:42:40+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b295c497", "title": "PKZIP Implode bug #3", "url": "https://entropymine.wordpress.com/2020/02/18/pkzip-implode-bug-3/", "published_at": "2020-02-18T18:29:30+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b36bc47c", "title": "Notes on WinHelp format, part 3", "url": "https://entropymine.wordpress.com/2020/02/15/notes-on-winhelp-format-part-3/", "published_at": "2020-02-15T16:08:23+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b3d84513", "title": "Notes on WinHelp format, part 2", "url": "https://entropymine.wordpress.com/2020/02/12/notes-on-winhelp-format-part-2/", "published_at": "2020-02-12T15:37:16+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b4735130", "title": "Another Implode bug in old PKZIP software", "url": "https://entropymine.wordpress.com/2020/02/08/another-implode-bug-in-old-pkzip-software/", "published_at": "2020-02-08T14:57:52+00:00" }, { "id": "01a0c55e-15cf-72cd-8816-e795b55ecf29", "title": "Notes on WinHelp format, part 1", "url": "https://entropymine.wordpress.com/2020/02/06/notes-on-winhelp-format-part-1/", "published_at": "2020-02-06T18:48:46+00:00" } ] posts Claim your blog
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2026

Why not everyone on the left thinks trans women in women’s sports is always a great ideaoriginal ↗
22 Sept 2026
PKLITE supplement 9: Min/max alloc. part 4original ↗
19 Aug 2026
PKLITE supplement 8: Min/max alloc. part 3original ↗
20 Jul 2026
The boy born on Tuesday puzzleoriginal ↗
11 Jun 2026
The universe is very, very fine-tunedoriginal ↗
25 May 2026
PKLITE supplement 7: Min/max alloc. part 2original ↗
24 Apr 2026
PKLITE supplement 6: Min/max alloc., part 1original ↗
5 Apr 2026
Spacemaker executable compressionoriginal ↗
23 Mar 2026
The easiest unsolved math problemoriginal ↗
24 Feb 2026
Details of Okumura’s LZSS compressionoriginal ↗
23 Jan 2026

2025

Notes on PFS:First Publisher ART formatoriginal ↗
29 Dec 2025
My two cents, rounded down, on penniesoriginal ↗
25 Nov 2025
The dates of earliest sunset and latest sunriseoriginal ↗
21 Oct 2025
Notes on CompuShoworiginal ↗
18 Sept 2025
Notes on ZIP format and disk spanningoriginal ↗
25 Aug 2025
The supernovas that get no respectoriginal ↗
22 Jul 2025
The “file” command: annotationsoriginal ↗
25 Jun 2025
The “file” command: binary and text filesoriginal ↗
22 May 2025
Notes on PKLITE, supplement 5: Another beta version foundoriginal ↗
11 Apr 2025
Classifying EXEPACK-compressed filesoriginal ↗
1 Mar 2025
Analyzing some encrypted ARJ archivesoriginal ↗
6 Feb 2025
MHD: A multi-file hex dump utilityoriginal ↗
23 Jan 2025

2024

The file command and black magic (Part 2)original ↗
22 Dec 2024
The file command and black magic (Part 1)original ↗
4 Nov 2024
Notes on PKLITE format, supplement 4: Polymorphic codeoriginal ↗
8 Oct 2024
Notes on PKZIP for Windows 3.xoriginal ↗
24 Sept 2024
A script to analyze magic patterns for the “file” commandoriginal ↗
26 Aug 2024
Notes on writing “magic” patterns for the “file” commandoriginal ↗
28 Jul 2024
Making an unsavable ColoRIX imageoriginal ↗
29 Jun 2024
What’s in an “_INST32I.EX_” file?original ↗
27 May 2024
Some notes on NP and NP-completenessoriginal ↗
28 Apr 2024
Survey of LZW compression schemesoriginal ↗
27 Mar 2024
The ground rules of chess problemsoriginal ↗
27 Feb 2024
Notes on bit orderoriginal ↗
28 Jan 2024

2023

64-bit BMP image filesoriginal ↗
29 Dec 2023
Making an uncompressed PNG image fileoriginal ↗
28 Nov 2023
DIET compressed EXE formatoriginal ↗
11 Nov 2023
Remember the 5th of Novemberoriginal ↗
5 Nov 2023
How big is a football field?original ↗
29 Oct 2023
How big is a light-year?original ↗
29 Oct 2023
The EXE checksum fieldoriginal ↗
27 Sept 2023
How DIET compression worksoriginal ↗
15 Aug 2023
Compiling lzhuf.c on a modern computeroriginal ↗
14 Aug 2023
Notes on PKLITE format, Supplement 3: Checksumoriginal ↗
18 Jul 2023
Fixing a hidden bug in PKZIP 2.04coriginal ↗
9 Jun 2023
Notes on PKLITE format, Part 7: v1.20 compressionoriginal ↗
11 May 2023
ColoRIX compressed 16-color formatoriginal ↗
28 Apr 2023
ColoRIX compressed image formatoriginal ↗
12 Apr 2023
Win32 I/O character encoding supplement 3: UTF-8 manifestoriginal ↗
25 Mar 2023
Updated survey of LHarc and LHAoriginal ↗
20 Feb 2023
Notes on SGI image formatoriginal ↗
30 Jan 2023

2022

Survey of EXPAND/DECOMP utilitiesoriginal ↗
27 Dec 2022
8 billionoriginal ↗
29 Nov 2022
Is faster-than-light communication possible?original ↗
26 Oct 2022
Notes on PKLITE format, Supplement 1: Descramblingoriginal ↗
11 Oct 2022
ARJ compression method 4original ↗
25 Sept 2022
Survey of RAR comment formatsoriginal ↗
19 Aug 2022
Which comes first in DOS timestamps, the date or the time?original ↗
26 Jul 2022
How to vote in a late-stage two-party systemoriginal ↗
26 Jul 2022
Notes on some old self-extracting ZIP archivesoriginal ↗
27 Jun 2022
Notes on PKLITE format, Part 6original ↗
9 May 2022
Notes on PKLITE format, Part 5original ↗
8 May 2022
What is LZSS compression?original ↗
22 Apr 2022
Survey of LHarc and LHA versions and namesoriginal ↗
27 Mar 2022
Notes on PKLITE format, Part 4original ↗
5 Mar 2022
Ambiguity of some infinite math expressionsoriginal ↗
23 Feb 2022
Notes on PKLITE format, Part 3original ↗
16 Jan 2022
Notes on PKLITE format, Part 2original ↗
13 Jan 2022

2021

Notes on PKLITE format, Part 1original ↗
19 Dec 2021
A quick overview of DOS EXE file formatoriginal ↗
11 Nov 2021
Testing some LZ77 compression limitsoriginal ↗
7 Oct 2021
Ways things can rotateoriginal ↗
28 Sept 2021
Differences between females and malesoriginal ↗
29 Aug 2021
The “guess what number I’m thinking of” problemoriginal ↗
28 Jul 2021
ARC/PAK’s “Distilled” compression schemeoriginal ↗
24 Jun 2021
ARC’s “Trimmed” compression schemeoriginal ↗
11 May 2021
Win32 I/O character encoding supplement 2 – setlocale enhancementoriginal ↗
8 May 2021
The Two Envelopes problemoriginal ↗
28 Apr 2021
Making an uncompressed JPEG 2000 fileoriginal ↗
22 Mar 2021
Yes, pi is wrong. Sorry about that.original ↗
11 Mar 2021
When a world needs a herooriginal ↗
4 Mar 2021
Formulas for “drop”original ↗
10 Feb 2021
Encoding Huffman codebooksoriginal ↗
24 Jan 2021

2020

Notes on LHARK compression formatoriginal ↗
24 Dec 2020
The Cleveland baseball teamoriginal ↗
22 Dec 2020
The blocksize field in LHA compression formatoriginal ↗
23 Nov 2020
Overview of some simple map projectionsoriginal ↗
29 Oct 2020
LZ77 compression prehistoryoriginal ↗
3 Sept 2020
An obscure polyglot file: LHA/CARoriginal ↗
26 Aug 2020
Earth portrait photosoriginal ↗
18 Jul 2020
Alternative to Cantor’s diagonalization argumentoriginal ↗
14 Jun 2020
Thoughts on timestamps of computer filesoriginal ↗
29 May 2020
Win32 I/O character encoding supplement 1 – A Cygwin issueoriginal ↗
6 May 2020
The recent discovery of an ancient bilaterian fossiloriginal ↗
9 Apr 2020
The World Chess Championship is kinda not so greatoriginal ↗
11 Mar 2020
PKZIP Implode bug #3original ↗
18 Feb 2020
Notes on WinHelp format, part 3original ↗
15 Feb 2020
Notes on WinHelp format, part 2original ↗
12 Feb 2020
Another Implode bug in old PKZIP softwareoriginal ↗
8 Feb 2020
Notes on WinHelp format, part 1original ↗
6 Feb 2020
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