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Giuseppe Tortorella
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Nov
24
reviewed
Approve
Squarefree Parts of Mersenne Numbers
Nov
18
comment
Is there a Legendrian Neighbourhood Theorem also for non-cooriented contact manifolds?
Dear @G_infinity, so, on a neighbourhood of $\mathbb P_x(T^\ast M)$ in $\mathbb P(T^\ast M)$, there doesn't exist any contact form $\alpha$, otherwise it would determine a global section of the line bundle. Thank you very much.
Nov
17
comment
Is there a Legendrian Neighbourhood Theorem also for non-cooriented contact manifolds?
Dear @Petya, could you give more details about the non-coorientability of the contact structure of $\mathbb P(T^\ast M)$ in any neighbourhood of the fibers of $\mathbb P(T^\ast M)\to M$? You could also consider to post your comment as an answer.
Nov
15
revised
What are some mathematical sculptures?
I make it a true hyperlink, and added a picture
Nov
15
revised
What are some mathematical sculptures?
I make it a true hyperlink
Nov
14
revised
Is there a Legendrian Neighbourhood Theorem also for non-cooriented contact manifolds?
I have corrected grammar and notation
Nov
14
revised
Is there a Legendrian Neighbourhood Theorem also for non-cooriented contact manifolds?
I have corrected grammar and notation
Nov
14
asked
Is there a Legendrian Neighbourhood Theorem also for non-cooriented contact manifolds?
Nov
13
reviewed
No Action Needed
relation between solution of a linear program and its perturbation
Nov
13
reviewed
No Action Needed
A toolbox for algebraic topology
Nov
13
reviewed
No Action Needed
Given an exact category, viewed as a site, do there exist non-additive sheaves?
Nov
13
reviewed
Approve
Why aren't operator semigroups studied from a dynamical perspective?
Nov
9
reviewed
Reviewed
Polygon Problem
Nov
9
reviewed
Approve
A set with not too many integers of the form $\alpha \beta^n + r$
Nov
8
reviewed
No Action Needed
Do Auslander-Reiten quivers coincide with the McKay quivers for arbitrary subgroups of GL(2,C)?
Nov
7
reviewed
No Action Needed
Distribution and moments of ratio of two beta variables?
Nov
7
reviewed
No Action Needed
Conjuring phantoms by hand?
Nov
6
reviewed
Reviewed
Which are the best mathematics journals, and what are the differences between them?
Nov
4
comment
Can you find linear recurrence relation for dimensions of invariant tensors?
Trying to improve a suggested edit of @dimension10 I corrected the three hyperlinks.
Nov
4
reviewed
Edit
Can you find linear recurrence relation for dimensions of invariant tensors?
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