19

Answers

votes newest views recent

11

Does this approach for the Poincare conjecture work?

10

Partition of R into midpoint convex sets

9

Good example of a non-continuous function all of whose partial derivatives exist

8

Equality vs. isomorphism vs. specific isomorphism

6

Good reference for homology of $K(\mathbb{Z}, 2n)$?

5

Pullbacks in Category of Sets and Partial Functions

5

smooth sections of smooth fiber bundles

5

Can a continuous, nowhere differentiable function have specified “shape” at every point?

4

Diameter of a circle in an embedded Riemannian manifold

3

Do rational numbers admit a categorification which respects the following “duality”?

2

What are the correct axioms for a “weakly associative monoidal functor”?

2

Existence of Fermi coordinates on a Riemannian manifold

2

What is the definition of “canonical” ?

2

Area enclosed by x^4 + y^4 = 1

2

How to prove Arnold Conjecture without using S^1 localization?

2

Are there topological restrictions to the existence of almost quaternionic structures on compact manifolds?

1

What is known about the strong Arnold conjecture?

1

A problem concerning two symmetric matrices

1

If the second derivative of a function on $\mathbb R^n$ is everywhere nondegenerate, does it follow that the first derivative is an injection?