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0

votes

1

answer

24

views

How is this action of monoidal derived category induced?[SOLVED]

2m ago Greg Stevenson 2,330●3●12

13

votes

7

answers

533

views

What is a topological space?

gn.general-topology ag.algebraic-geometry noncommutative-geometry oa.operator-algebras

8m ago Tom Leinster 3,623●3●24

3

votes

1

answer

58

views

Can injective modules over R give non-injective sheaves over Spec R?

ag.algebraic-geometry ac.commutative-algebra homological-algebra

19m ago Mariano Suárez-Alvarez 7,480●10●36

10

votes

5

answers

351

views

MaxSpec, Spec, … “RadSpec”? Or, why not look at all radical ideals?

ag.algebraic-geometry

22m ago Qiaochu Yuan 9,855●12●77

8

votes

1

answer

41

views

How can I define the product of two ideals categorically?

ct.category-theory ac.commutative-algebra

27m ago Bjorn Poonen 3,433●9●27

6

votes

2

answers

60

views

Outer automorphisms of simple Lie Algebras

lie-algebras

35m ago Theo Johnson-Freyd 4,390●2●22

6

votes

1

answer

51

views

Can the Quantum Torus be realized as a Hall Algebra?

qa.quantum-algebra geometric-representation hall-algebras

37m ago Ben Webster♦ 9,136●7●38

7

votes

3

answers

206

views

The ‘real’ use of Quantum Algebra, Non-commutative Geometry, Representation Theory, and Algebraic Geometry to Physics

qa.quantum-algebra noncommutative-geometry ag.algebraic-geometry big-picture mp.mathematical-physics

42m ago Scott Morrison♦ 2,399●7●24

1

vote

0

answers

8

views

Connection between bi-Hamiltonian systems and complete integrability

integrable-systems examples mp.mathematical-physics

1h ago Gjergji Zaimi 2,135●3●12

8

votes

2

answers

177

views

Intuition for Primitive Cohomology

ag.algebraic-geometry complex-geometry cohomology

1h ago Tim Perutz 1,260●1●9

0

votes

1

answer

70

views

Examples of Equivariant Sheaves under Group action

ag.algebraic-geometry

2h ago Emerton 4,903●13●20

4

votes

1

answer

124

views

Mittag-Leffler condition: what’s the origin of its name?

homological-algebra

2h ago Reid Barton 8,572●12●47

0

votes

0

answers

40

views

Has the Lie group preserving a probability distribution been used in Bayesian statistics?

st.statistics pr.probability lie-groups

2h ago Harald Hanche-Olsen 2,133●1●16

16

votes

2

answers

168

views

What do heat kernels have to do with the Riemann-Roch theorem and the Gauss-Bonnet theorem?

dg.differential-geometry manifolds ap.analysis-of-pdes ag.algebraic-geometry

3h ago Qiaochu Yuan 9,855●12●77

1

vote

1

answer

42

views

Why is solving a MILP w/o an objective function so much faster?

optimization oc.optimization-control

3h ago Jimmy 31●2

0

votes

0

answers

22

views

Noether-Lefschetz locus in enumerative geometry.

enumerative-geometry ag.algebraic-geometry reference-request

3h ago Csar Lozano 650●7

5

votes

0

answers

28

views

Integrable solutions to an elliptic PDE on divergence form have a definite sign

ap.analysis-of-pdes

4h ago Harald Hanche-Olsen 2,133●1●16

0

votes

3

answers

212

views

“Interesting” properties of sets of natural numbers

arithmetic analysis set-theory soft-question

4h ago François G. Dorais 1,904●2●11

5

votes

1

answer

82

views

An algebraic proof of Mumford’s smoothness criterion for surfaces?

gt.geometric-topology at.algebraic-topology ac.commutative-algebra ag.algebraic-geometry

5h ago F Zaldivar 41●1

4

votes

1

answer

126

views

Is there a canonical Hopf structure on the center of a universal enveloping algebra?

lie-algebras hopf-algebras rt.representation-theory quantum-topology

5h ago Pavel Etingof 1,136●2●8

30

votes

21

answers

5k

views

Magic trick based on deep mathematics

general popularization soft-question

5h ago zeb 872●2●8

8

votes

4

answers

235

views

Invariant Polynomials under a Group Action (hidden GIT)

ag.algebraic-geometry algebra group-actions

5h ago Tyler Lawson 4,767●8●26

3

votes

2

answers

279

views

Proof of Bloch-Kato conjecture of K-theory?

kt.k-theory-homology

5h ago Julian 11●1

4

votes

3

answers

91

views

PDE on manifolds

dg.differential-geometry differential-equations at.algebraic-topology

6h ago Justin Curry 355●10

3

votes

1

answer

51

views

Joint Law with 2 marginals and marginal of the spread

st.statistics pr.probability

6h ago has2 128●4

11

votes

3

answers

170

views

Understanding the definition of the Lefschetz (pure effective) motive

ag.algebraic-geometry motives monoidal-categories

7h ago Evgeny Shinder 602●10

2

votes

1

answer

108

views

What manifold has $\mathbb{H}P^{odd}$ as a boundary?

fibre-bundles dg.differential-geometry at.algebraic-topology

7h ago Ryan Budney 3,299●4●21

4

votes

1

answer

85

views

What is the relationship between t-structure and Torsion pair?

triangulated-categories ct.category-theory

7h ago Greg Stevenson 2,330●3●12

23

votes

15

answers

2k

views

Depressed graduate student.

mathematics-education soft-question

7h ago Anonymous 69●3

4

votes

1

answer

98

views

A regularity property of transition matrices for the cat map

ds.dynamical-systems symbolic-dynamics ergodic-theory

8h ago Steve Huntsman 2,103●1●14

3

votes

1

answer

141

views

Jack polynomials as determinants

symmetric-functions co.combinatorics rt.representation-theory

8h ago Sasha 31●3

0

votes

0

answers

29

views

reflection formula for lerch zeta function

analysis

8h ago vilvarin 71●3

6

votes

6

answers

144

views

Density of numbers having large prime divisors (formalizing heuristic probability argument)

nt.number-theory pr.probability

8h ago Victor Miller 251●1●7

-1

votes

1

answer

118

views

cauchy product for general case

analysis

9h ago Leonid Kovalev 1,256●2●15

4

votes

1

answer

135

views

Galois group of a product of polynomials

algebra

9h ago Johannes Hahn 161●5

4

votes

2

answers

187

views

What is the probability distribution function for the product of two correlated Gaussian random variable?

pr.probability

9h ago Yemon Choi 2,476●2●13

3

votes

1

answer

52

views

Does a Cayley graph on a minimal symmetric set of generators determine a finite group up to isomorphism?

gr.group-theory co.combinatorics

9h ago David Eppstein 2,626●4●10

2

votes

1

answer

123

views

Almost but not quite a homomorphism

gr.group-theory

9h ago Andrew Stacey 5,241●1●36

4

votes

1

answer

144

views

Primes of the form a^2+1

nt.number-theory prime-numbers analytic-number-theory

9h ago Darsh Ranjan 2,370●3●16

15

votes

13

answers

2k

views

The importance of EGA and SGA for “students of today”

ag.algebraic-geometry

9h ago Ravi Vakil 318●1●7

0

votes

2

answers

119

views

Existence of an “anti-additive” (or “never linear”) map?

analysis algebra

11h ago Dmitri 3,407●4●21

1

vote

1

answer

89

views

How many rings exist when ring is subspace of finite dimentional vector space?

ra.rings-and-algebras

11h ago Mariano Suárez-Alvarez 7,480●10●36

11

votes

4

answers

447

views

When to start reviewing

career big-list opinion

11h ago JS Milne 2,293●3●18

5

votes

2

answers

154

views

+150

Do there exist small neighborhoods in a classical mechanical system without pairs of focal points?

mp.mathematical-physics differential-equations sg.symplectic-geometry

12h ago Theo Johnson-Freyd 4,390●2●22

3

votes

1

answer

95

views

Maximizing Sparsity in l1 Minimization?

oc.optimization-control na.numerical-analysis mg.metric-geometry

12h ago fuzzytron 640●7

0

votes

1

answer

89

views

Kronecker product definition

tensor-product

12h ago Qiaochu Yuan 9,855●12●77

13

votes

1

answer

299

views

What does the incidence algebra of the lattices in C tell us about modular forms?

modular-forms cv.complex-variables co.combinatorics

12h ago Steve Huntsman 2,103●1●14

18

votes

6

answers

317

views

Applications of Noncommutative Geometry

ag.algebraic-geometry noncommutative-geometry motivation

12h ago Hailong Dao 2,068●12

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