User Ryan Budney

4 votes

What methods exist to prove that a finitely presented group is finite?

answered Dec 3, 2009 at 22:41

4 votes

One-step problems in geometry

answered Dec 18, 2009 at 6:54

4 votes

Embeddings of $S^2$ in $\mathbb{CP}^2$

answered Dec 12, 2009 at 20:02

4 votes

Accepted

Periodic mapping classes of the genus two orientable surface

answered Dec 4, 2009 at 4:29

4 votes

Why is it useful to classify the vector bundles of a space?

answered Feb 24, 2010 at 18:58

4 votes

Good differential equations text for undergraduates who want to become pure mathematicians

answered Jun 19, 2010 at 6:39

4 votes

Isometry classification of spherical space forms

answered Apr 19, 2010 at 16:32

4 votes

Vector spaces without natural bases

answered Jul 19, 2010 at 0:39

4 votes

Accepted

How to construct a vector fields with isolated zeros?

answered Jul 28, 2010 at 6:45

4 votes

Space of all topological knots (tame and wild)

answered Oct 19, 2010 at 15:01

4 votes

Accepted

Milnor's isotopy invariant using spectral sequence?

answered Oct 10, 2010 at 16:31

4 votes

Accepted

Some Vassiliev Invariant Questions

answered May 30, 2011 at 18:36

4 votes

Does every knot contain all four vertices of an isosceles trapezoid?

answered May 30, 2011 at 4:12

4 votes

Classifying manifolds

answered May 21, 2011 at 18:27

4 votes

Algorithm for detecting ribbon or slice links?

answered Feb 19, 2011 at 3:47

4 votes

computing homotopy type

answered Feb 8, 2011 at 19:07

4 votes

Accepted

conformal diffeomorphism of sphere

answered Nov 4, 2011 at 0:46

4 votes

Does there exist smooth circle action on manifolds M^{4n} with exactly three fixed points such that n\neq 1

answered Nov 8, 2011 at 7:52

4 votes

Unknotting knots in 4D

answered Jan 24, 2012 at 23:17

4 votes

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Smooth and topological bordism and homology

answered Sep 8, 2011 at 18:22

4 votes

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I was wondering if the set of singular loops is a (somewhere) submanifold of loop space?

answered Sep 14, 2011 at 17:57

4 votes

Accepted

$Spin^c$ structure on the mapping torus of an automorphism of the torus

answered Aug 16, 2011 at 17:51

4 votes

Natural examples of finite dimensional spaces with interesting 2-type

answered Aug 21, 2011 at 21:59

4 votes

Elements of finite order in mapping class groups of high dimensional manifolds

answered Oct 11, 2011 at 22:20

4 votes

When is a manifold a tangent bundle?

answered Aug 29, 2012 at 17:29

4 votes

Proving the Gauss-Bonnet theorem for embedded surfaces using triangulations

answered Mar 9, 2012 at 9:10

4 votes

List of Classifying Spaces and Covers

answered Mar 6, 2012 at 8:17

4 votes

Accepted

How do we use an Ehresmann connection to define a semispray?

answered Apr 15, 2012 at 19:07

4 votes

Second homotopy group of Cayley complex

answered Jun 21, 2012 at 4:43

3 votes

Accepted

Extending Smooth Embeddings of S^n into S^{n+k}

answered Apr 22, 2012 at 9:55

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437 Answers

What methods exist to prove that a finitely presented group is finite?

One-step problems in geometry

Embeddings of $S^2$ in $\mathbb{CP}^2$

Periodic mapping classes of the genus two orientable surface

Why is it useful to classify the vector bundles of a space?

Good differential equations text for undergraduates who want to become pure mathematicians

Isometry classification of spherical space forms

Vector spaces without natural bases

How to construct a vector fields with isolated zeros?

Space of all topological knots (tame and wild)

Milnor's isotopy invariant using spectral sequence?

Some Vassiliev Invariant Questions

Does every knot contain all four vertices of an isosceles trapezoid?

Classifying manifolds

Algorithm for detecting ribbon or slice links?

computing homotopy type

conformal diffeomorphism of sphere

Does there exist smooth circle action on manifolds M^{4n} with exactly three fixed points such that n\neq 1

Unknotting knots in 4D

Smooth and topological bordism and homology

I was wondering if the set of singular loops is a (somewhere) submanifold of loop space?

$Spin^c$ structure on the mapping torus of an automorphism of the torus

Natural examples of finite dimensional spaces with interesting 2-type

Elements of finite order in mapping class groups of high dimensional manifolds

When is a manifold a tangent bundle?

Proving the Gauss-Bonnet theorem for embedded surfaces using triangulations

List of Classifying Spaces and Covers

How do we use an Ehresmann connection to define a semispray?

Second homotopy group of Cayley complex

Extending Smooth Embeddings of S^n into S^{n+k}