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Tri
  • Member for 10 years, 11 months
  • Last seen more than a week ago
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9
Representation theorem for modular lattices?
Feb 15, 2016
8
If $P$ and $Q$ are finite, non-empty posets and the poset of order-preserving maps $P^P$ is isomorphic to $Q^Q$, must $P$ be isomorphic to $Q$?
Sep 22, 2024
7
Was lattice theory central to mid-20th century mathematics?
May 29, 2014
6
representing an uncountable free group as a union of an increasing sequence of countable subgroups
Jul 6, 2018
5
Open questions about posets
Feb 9, 2019
5
Disjoint Common Transversals of Two Families of Sets
Jul 19, 2019
5
Generalization of Menger's theorem to infinite graphs
Sep 15, 2019
5
Menger's theorem with restrictions on where the paths can begin and end
Oct 19, 2021
4
Topological problems solved by lattice duality
Apr 26, 2024
4
Completeness of Localizations of Completions of Commutative Rings
Feb 3, 2016