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Mathematics
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Tri
  • Member for 10 years, 2 months
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3
Preprint by W. Danielewski, "On the cancellation problem and automorphism groups of affine algebraic varieties," Warsaw, 1989?
Aug 16, 2018
2
the intersection of a basis of a free group with each subgroup in a continuous chain of subgroups
Jul 9, 2018
2
Where can I find a proof of Shelah mentioned in the book "Almost Free Modules" as Theorem VI.5.8?
Jul 26, 2018
2
The Interior of a Jordan Curve versus the Interior of a Polygonal Approximation
Apr 26, 2019
2
An Ideal Related to a Polynomial Ring: Theorem 3.4 of Chapter XXI of Lang's "Algebra" (Revised Third Edition)
Jul 15, 2020
2
Is There a List of Errors in Cartan and Eilenberg's "Homological Algebra"?
Jul 20, 2020
2
Countably compact $T_0$ space $S$ such that for all $X\subseteq S$ and every $p\in X'$, there exists an open set $O$ such that ... [closed]
Jan 7
2
Join-Irreducibles and Direct Products
Nov 27, 2014
2
Lemma 0 in Hajnal's Paper "Embedding Finite Graphs into Graphs Colored with Infinitely Many Colors"
Jun 30
1
A Bijection Between $\kappa\times\aleph_{\alpha+\kappa}$ and $\aleph_{\alpha+\kappa}$ with Certain Order-Preservation Properties
Aug 24, 2018
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8
Representation theorem for modular lattices?
7
Was lattice theory central to mid-20th century mathematics?
6
representing an uncountable free group as a union of an increasing sequence of countable subgroups
5
Disjoint Common Transversals of Two Families of Sets
5
Generalization of Menger's theorem to infinite graphs