Sam Lisi

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Name	Sam Lisi
Member for	3 years
Seen	2 hours ago
Website	homepages.ulb.ac.be/~samulisi
Location	Nantes, France
Age

Postdoc working in symplectic and contact topology. At the Université de Nantes

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84

96

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73

answers

12k

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Not especially famous, long-open problems which anyone can understand

big-list open-problem open-problems-list

may 13 at 11:01 Santi Spadaro 666●4●6

47

89

votes

2

answers

8k

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What are the shapes of rational functions?

cv.complex-variables ds.dynamical-systems ag.algebraic-geometry gt.geometric-topology na.numerical-analysis

jan 14 at 17:19 Karl Luttinger 23●1

55

86

votes

7

answers

21k

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Where to buy premium white chalk in the U.S., like they have at RIMS?

teaching

apr 3 at 4:57 Kyung 1●1●2

23

49

votes

0

answers

3k

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Dropping three bodies

differential-equations ca.analysis-and-odes mp.mathematical-physics ds.dynamical-systems classical-mechanics

mar 4 at 21:41 patternguy 1

15

34

votes

4

answers

3k

views

Does the fact that this vector space is not isomorphic to its double-dual require choice?

axiom-of-choice linear-algebra

apr 5 12 at 9:56 Asaf Karagila 7,158●1●14●44

46

23

votes

10

answers

6k

views

Algebraic Topology Beyond the Basics:Any Texts Bridging The Gap?

at.algebraic-topology textbook-recommendation

feb 9 at 14:24 Mikhail Khovanov 1●1●1

12

22

votes

5

answers

2k

views

Liouville’s theorem with your bare hands

cv.complex-variables

dec 22 at 0:05 Daniel Litt 8,179●2●25●49

6

16

votes

3

answers

853

views

Examples for non-naturality of universal coefficients theorem

at.algebraic-topology

mar 31 11 at 22:56 Charles Rezk 12.9k●1●31●66

2

16

votes

2

answers

682

views

Can a Lagrangian submanifold of ${\mathbb R}^{2n}$ be dense ($n>1$)?

sg.symplectic-geometry dg.differential-geometry gt.geometric-topology

jan 17 12 at 18:56 Robert Bryant 21.8k●3●75●97

12

15

votes

4

answers

2k

views

Is the Fukaya category “defined”?

fukaya-category mirror-symmetry derived-category sg.symplectic-geometry symplectic-topology

nov 2 09 at 1:22 Max M 443●1●9

23

13

votes

5

answers

2k

views

The Relationship between Complex and Algebraic Geomety

complex-geometry ag.algebraic-geometry

nov 17 09 at 7:37 Csar Lozano Huerta 1,383●8●22

5

13

votes

2

answers

624

views

Why Donaldson’s Four-Six Conjecture?

sg.symplectic-geometry dg.differential-geometry open-problem

nov 15 at 20:55 Chris Gerig 5,526●1●12●40

6

12

votes

2

answers

412

views

Special Hamiltonian diffeomorphisms

sg.symplectic-geometry

oct 5 10 at 2:30 Dick Palais 10k●1●38●61

5

11

votes

6

answers

1k

views

Polynomial contact structures on $RP^3$

dg.differential-geometry contact-manifolds ag.algebraic-geometry

nov 14 at 18:03 Nikita Kalinin 1,398●4●17

5

10

votes

1

answer

400

views

Hamiltonian displaceability of tori in symplectic balls

symplectic-topology sg.symplectic-geometry

may 21 10 at 19:48 Chris Woodward 41●2