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Why is Set, and not Rel, so ubiquitous in mathematics? (3)
0
Picturing a Certain Torus and Klein Bottle
1
Simplex with edges of length at least s having smallest circumradius
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Awfully sophisticated proof for simple facts
0
Duality map in strictly convex Banach spaces
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Mathematical habits of thought and action which would be of use to non-mathematicians
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Pathological Examples of Dimension (2)
3
$n$-in-a-row game on $\mathbb{R}^2$
1
Bounded Hamming distance
3
Existence of a continuous and unbounded map $f$ with $f(f(x))=x$
5
Which topological spaces are (topological) groups? (2)
1
Hamming codes from overlapping vectors
-1
3-coloring of specific planar graphs
0
splitting one limit into two?
1
Is there an algebraic approach to metric spaces?
3
Can Lipschitz maps increase the Lebesgue dimension ?
5
Every continuous function is homotopic to a locally Lipschitz one
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Combinatorial distance between simplicial complexes
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Cech cohomology as a colimit over maps to a CW complex
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Can you explicitly write R^2 as a disjoint union of two totally path disconnected sets?
2
A question on metrizable space
6
Does homeomorphic and isomorphic always imply homeomorphically isomorphic?
3
Great mathematicians born 1850-1920 (ET Bell’s book ≲ x ≲ Fields Medalists)
2
Axiom of Choice and Continuous function
-3
Math Annotate Platform?
0
isometric embeddings of Cayley graphs in “nice” spaces (3)
8
One tetrahedron inside another tetrahedron
5
Characterizing Convex Configurations of Quadrupels of Coplanar Points via Linear (In-)equalities between Distance Sums or Differences (2)
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$2$-colorings of triangles, resulting in $(2\ 2)$-colorings of all tetrahedra
0
Decomposing irreducible polynomials with a prescribed condition - Existence
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