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13 May 2025
- diffhist Polyhedron 02:52 −45 Preimage talk contribs (→Convex polyhedra: General ce (spelling/grammar fixes + other edits for clarity) + change deltahedra to convex deltahedra)
- diffhist Polyhedron 02:29 +47 Preimage talk contribs (→Convex polyhedra: Fix error from 21:03, 25 May 2024 + ce: midsphere of canonical polyhedron is centered at the centroid of its tangent points with edges, not the centroid of the polyhedron (these are the same for zonohedra but e.g. differ for square pyramids: https://mathworld.wolfram.com/Pyramid.html, https://11011110.github.io/blog/2023/11/20/some-pyramidology.html))
- diffhist Polyhedron 02:06 −139 Preimage talk contribs (→Convex polyhedra: Fix error from 03:36, 16 September 2024: not all non-convex polyhedra are star polyhedra or Kepler–Poinsot polyhedra + copyedit down (e.g. The Fifty-Nine Icosahedra already covered in #20th–21st centuries))
11 May 2025
- diffhist m Chain complex 03:35 −324 Barçaforlife talk contribs (→Definitions)
9 May 2025
- diffhist Geometric lattice 06:40 +150 178.255.168.171 talk (In section "Duality" I added a sentence ''A simple example of a geometric lattice whose dual lattice is not geometric is the lattice of flats of the uniform matroid of rank 3 with 4 elements.")
8 May 2025
- diffhist m Simplex 20:20 −21 Arjayay talk contribs (Reverted edit by 168.176.40.196 (talk) to last version by Quantling) Tag: Rollback
- diffhist Simplex 20:18 +21 168.176.40.196 talk Tag: Reverted
- diffhist Geometric lattice 18:53 +10 178.255.168.171 talk (In section "Duality" I replaced ''the property of being atomistic is not preserved by order-reversal" by the property of being (upper) semimodular is not preserved by order-reversal. Indeed, by Proposition 1.7.8 in Oxley, Matroid Theory (2nd), Oxford 2011, every geometric lattice is always coatomistic, and, thus, its dual lattice is atomistic.)
- diffhist Geometry 16:23 −386 Jacobolus talk contribs (revert. this sentence is way out of place here. (among other reasons, because students learn geometry from preschool up through graduate school.) if someone wants to add a section about geometry education and curricula, that would be fine, but don't just randomly cram a sentence like this in the lead) Tag: Manual revert
- diffhist Geometry 14:54 +386 Chatul talk contribs (citations) Tag: Reverted
- diffhist Geometry 00:41 −51 Remsense talk contribs (Reverting edit(s) by TheBartman2012 (talk) to rev. 1288948108 by Endomorphins: No reliable source (UV 0.1.6)) Tags: Ultraviolet Undo
- diffhist m Geometry 00:40 +51 TheBartman2012 talk contribs (added taught level) Tags: Reverted Mobile edit Mobile app edit iOS app edit App section source
6 May 2025
- diffhist Combinatorics 20:02 −16 JayBeeEll talk contribs (Undid revision 1289087720 by 109.166.138.30 (talk) "from A and B to C and from D to E" no thanks) Tag: Undo
- diffhist m Combinatorics 20:01 +1 JayBeeEll talk contribs (→History)
- diffhist Combinatorics 12:05 +16 109.166.138.30 talk Tag: Reverted