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Top Questions
18
votes
Duality between topology and bornology
gn.general-topology
mg.metric-geometry
lattice-theory
topological-vector-spaces
filters
asked May 10, 2016 at 17:33
mathoverflow.net
14
votes
Quotient of solid torus by swapping coordinates on boundary
at.algebraic-topology
gn.general-topology
gt.geometric-topology
3-manifolds
asked Dec 22, 2021 at 10:26
mathoverflow.net
12
votes
Vertex algebras and factorization algebras
at.algebraic-topology
ct.category-theory
operads
vertex-algebras
asked Jan 19, 2019 at 10:36
mathoverflow.net
11
votes
Why do we need mixed states in quantum mechanics?
quantum-mechanics
hilbert-space
quantum-entanglement
density-operator
quantum-states
asked Oct 20, 2022 at 22:46
physics.stackexchange.com
8
votes
Identifying cells in cell complexes
general-topology
algebraic-topology
manifolds
asked Dec 7, 2021 at 17:45
math.stackexchange.com
8
votes
Square roots of finite abelian groups
abstract-algebra
group-theory
abelian-groups
asked Jul 23, 2022 at 20:57
math.stackexchange.com
8
votes
Categorical interpretation of quantum double $D(A,B,\eta)$
ct.category-theory
hopf-algebras
monoidal-categories
drinfeld-center
asked Jul 26, 2017 at 16:38
mathoverflow.net
6
votes
A coend in the category of vector spaces
linear-algebra
abstract-algebra
category-theory
limits-colimits
monoidal-categories
asked Jan 23, 2019 at 22:46
math.stackexchange.com
6
votes
Understanding Segal's definition of conformal field theory
quantum-field-theory
string-theory
conformal-field-theory
asked Aug 28, 2015 at 10:03
mathoverflow.net
5
votes
Create block matrix with secondary diagonals using Band function
list-manipulation
matrix
sparse-arrays
asked Mar 16, 2020 at 10:20
mathematica.stackexchange.com
1
2
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