Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 424
7 votes
Accepted

Symplectic blow-up

I don't know a place where this is written up explicitly, but it's not hard as soon as one has an appropriate standard model for a neighborhood of a symplectic manifold for use in the Weinstein Neighb …
Mike Usher's user avatar
  • 2,927
3 votes
Accepted

On the de Rham cohomology of 1-forms in cotangent bundle.

As has been noted in Peter Michor's answer, a Hamiltonian isotopy can certainly move the graph of a closed one-form to a Lagrangian submanifold that is not the graph of a one-form. However, in the sp …
Mike Usher's user avatar
  • 2,927
4 votes
Accepted

codimension of bubbling of disk and sphere

Moduli spaces of psuedoholomorphic curves have an associated expected dimension, given by the Fredholm index of the appropriate Cauchy-Riemann operator; if an appropriate transversality condition hold …
Mike Usher's user avatar
  • 2,927
13 votes
Accepted

Why (and whether) is any smooth embedded torus in R^4 isotopic to an embedded Lagrangian torus?

Whoever told you that any embedded torus in R4 is isotopic to a Lagrangian torus was sorely mistaken. Luttinger (JDG 1995) observed the following: The manifolds obtained by doing certain Dehn-type su …
Mike Usher's user avatar
  • 2,927
19 votes
Accepted

Is the Fukaya category "defined"?

From what I understand, the most fundamental issue obstructing the definition of the Fukaya category in general is the fact that the boundaries of the relevant moduli spaces typically have codimension …
Mike Usher's user avatar
  • 2,927