F. C.

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Name	F. C.
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Website	math.univ-lyon1.fr/~chapoton
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18

42

votes

1

answer

2k

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A = B (but not quite); 3-d arrays with multiple recurrences

combinatorial-identities co.combinatorics

nov 15 11 at 22:12 Brendan McKay 9,111●1●13●33

30

31

votes

6

answers

2k

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Why do Bernoulli numbers arise everywhere?

co.combinatorics

jun 23 at 1:59 Hassan Jolany 1,046●1●2●12

23

30

votes

2

answers

2k

views

Formal group laws and L-series

algebraic-number-theory nt.number-theory

jul 18 at 5:19 debargha 41●4

15

29

votes

4

answers

2k

views

Integer-valued factorial ratios

nt.number-theory co.combinatorics binomial-coefficients hypergeometric-functions

aug 1 10 at 16:03 darij grinberg 12.6k●1●24●75

13

28

votes

11

answers

2k

views

What is the Cayley projective plane?

at.algebraic-topology projective-space

feb 20 11 at 15:10 Abhinav Kumar 1,434●8●11

15

27

votes

2

answers

704

views

What do cluster algebras tell us about Grassmannians?

reference-request cluster-algebras ag.algebraic-geometry rt.representation-theory ra.rings-and-algebras

oct 13 at 18:49 Hugh Thomas 2,151●5●14

40

25

votes

3

answers

5k

views

What is Koszul duality?

homological-algebra koszul-duality ct.category-theory

nov 27 09 at 23:59 Ilya Nikokoshev 8,989●5●30●73

10

24

votes

2

answers

1k

views

Is there a “quantum” Riemann zeta function?

divergent-series qa.quantum-algebra zeta-functions

nov 23 10 at 21:16 F. C. 412●3●6

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23

votes

6

answers

1k

views

What are natural questions to ask about an operad?

operads

feb 28 at 2:53 Peter May 12k●1●38●54

15

23

votes

2

answers

2k

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What else is Seiberg-Witten Theory equal to?

dg.differential-geometry gt.geometric-topology soft-question

feb 11 at 8:11 Chris Gerig 5,526●1●12●40

9

20

votes

1

answer

630

views

A strange sum over bipartite graphs

graph-theory algebraic-combinatorics generating-functions enumeration

mar 6 12 at 11:02 Brendan McKay 9,111●1●13●33

8

18

votes

2

answers

915

views

Graphs, K-theory and combinatorial balls: conjectures

graph-theory kt.k-theory-homology at.algebraic-topology co.combinatorics morse-theory

may 26 11 at 18:44 Tim Porter 3,735●6●14

4

18

votes

0

answers

410

views

Derivative of Class number of real quadratic fields

nt.number-theory algebraic-number-theory

nov 30 at 18:23 Franz Lemmermeyer 17.2k●1●38●101

3

17

votes

1

answer

570

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Divisibility properties of Hurwitz numbers

nt.number-theory arithmetic-geometry

sep 27 11 at 16:05 Noam D. Elkies 18k●4●62●90

5

17

votes

2

answers

1k

views

Is there anything special about the Riemann surface $y^2 = x(x^{10}+11x^5-1)$?

riemann-surfaces gt.geometric-topology ag.algebraic-geometry

mar 1 12 at 19:38 Tito Piezas III 667●2●9