41554 blogs · [ { "id": "01a0876e-947c-71c4-92d5-2f9737433ebd", "title": "Atomistic, but non-complete lattices", "url": "https://dominiczypen.wordpress.com/2026/02/13/atomistic-but-non-complete-lattices/", "published_at": "2026-02-13T10:13:00+00:00" }, { "id": "01a0876e-947c-71c4-92d5-2f9737a2782d", "title": "Selection principles: “Omega choose T” vs “Omega choose Gamma”", "url": "https://dominiczypen.wordpress.com/2025/08/18/selection-principles-omega-choose-t-vs-omega-choose-gamma/", "published_at": "2025-08-18T08:20:25+00:00" }, { "id": "01a0876e-947c-71c4-92d5-2f97389452dd", "title": "The Vietoris topology as a functor V : Top -> Top", "url": "https://dominiczypen.wordpress.com/2025/02/17/the-vietoris-topology-as-a-functor-v-top-top/", "published_at": "2025-02-17T09:13:48+00:00" }, { "id": "01a0876e-947c-71c4-92d5-2f9738a49d63", "title": "The Parity Principle: a pitfall in the use of Zorn’s Lemma", "url": 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"title": "Two notions of continuity in the space of natural sequences", "url": "https://dominiczypen.wordpress.com/2015/11/19/two-notions-of-continuity-in-the-space-of-natural-sequences/", "published_at": "2015-11-19T10:48:01+00:00" }, { "id": "01a0c508-b967-7362-8211-42eb55815bb3", "title": "A reformulation of Hadwiger’s conjecture", "url": "https://dominiczypen.wordpress.com/2015/10/23/a-reformulation-of-hadwigers-conjecture/", "published_at": "2015-10-23T06:56:46+00:00" }, { "id": "01a0c508-b967-7362-8211-42eb5581d3ec", "title": "Accumulation without converging subsequence", "url": "https://dominiczypen.wordpress.com/2014/10/13/accumulation-without-converging-subsequence/", "published_at": "2014-10-13T15:19:36+00:00" }, { "id": "01a0c508-b967-7362-8211-42eb55cef17c", "title": "Measuring subsets of N", "url": "https://dominiczypen.wordpress.com/2014/06/18/measuring-subsets-of-n/", "published_at": "2014-06-18T07:10:55+00:00" }, { "id": "01a0c508-b967-7362-8211-42eb565011bf", "title": "Additive?", "url": "https://dominiczypen.wordpress.com/2014/06/06/additive/", "published_at": "2014-06-06T10:21:56+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd2b9f493", "title": "Exceptions to the Friendship Paradox", "url": "https://dominiczypen.wordpress.com/2014/03/17/exceptions-to-the-friendship-paradox/", "published_at": "2014-03-17T10:23:11+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd39fd302", "title": "Two-dimensional convergence", "url": "https://dominiczypen.wordpress.com/2014/02/18/two-dimensional-convergence/", "published_at": "2014-02-18T09:19:36+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd44c715b", "title": "A mathematical view on the notion of “median”", "url": "https://dominiczypen.wordpress.com/2013/12/30/a-mathematical-view-on-the-notion-of-median/", "published_at": "2013-12-30T10:22:21+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd47d0c37", "title": "Adventskranz-Rätsel", "url": "https://dominiczypen.wordpress.com/2013/12/17/adventskranz-ratsel/", "published_at": "2013-12-17T10:06:49+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd4c9c49e", "title": "Math facts with simple proofs that are still (somewhat) surprising", "url": "https://dominiczypen.wordpress.com/2013/12/17/math-facts-with-simple-proofs-that-are-still-somewhat-surprising/", "published_at": "2013-12-17T08:11:25+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd57e6908", "title": "Sometimes a maximality principle is true even if Zorn’s Lemma fails", "url": "https://dominiczypen.wordpress.com/2013/12/06/sometimes-a-maximality-principle-is-true-even-if-zorns-lemma-fails/", "published_at": "2013-12-06T10:16:56+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd5a2c2bc", "title": "On empty Hom-sets between graphs", "url": "https://dominiczypen.wordpress.com/2013/12/04/on-empty-hom-sets-between-graphs/", "published_at": "2013-12-04T09:06:40+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd66448ad", "title": "On the topological closure of the diagonal of a space", "url": "https://dominiczypen.wordpress.com/2013/12/03/on-the-topological-closure-of-the-diagonal-of-a-space/", "published_at": "2013-12-03T09:58:37+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd6669cfb", "title": "A universal property on groups", "url": "https://dominiczypen.wordpress.com/2013/11/19/a-universal-property-on-groups/", "published_at": "2013-11-19T08:48:20+00:00" }, { "id": "01a0c519-0791-7291-9e25-e17dd75acd16", "title": "Two definitions of connectedness in graphs", "url": "https://dominiczypen.wordpress.com/2013/08/14/two-definitions-of-connectedness-in-graphs/", "published_at": "2013-08-14T09:28:45+00:00" }, { "id": "01a0c523-faec-706d-9661-2f2b31718189", "title": "Basics on maps", "url": "https://dominiczypen.wordpress.com/2012/07/26/basics-on-maps/", "published_at": "2012-07-26T09:18:10+00:00" }, { "id": "01a0c523-faec-706d-9661-2f2b325a6079", "title": "Dreaming mathematics", "url": "https://dominiczypen.wordpress.com/2010/10/18/dreaming-mathematics/", "published_at": "2010-10-18T15:10:10+00:00" }, { "id": "01a0c523-faec-706d-9661-2f2b32de9f6b", "title": "(Least) upper bounds for order-preserving maps", "url": "https://dominiczypen.wordpress.com/2010/08/19/order-preserving-maps/", "published_at": "2010-08-19T12:18:50+00:00" }, { "id": "01a0c523-faec-706d-9661-2f2b335585f0", "title": "T_2 and compactness", "url": "https://dominiczypen.wordpress.com/2010/08/17/t_2_compactness/", "published_at": "2010-08-17T09:06:38+00:00" } ] posts Claim your blog
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