User Peter Teichner

25 votes

Accepted

What would the slice-ribbon conjecture imply?

answered Mar 14, 2010 at 8:32

22 votes

Accepted

A question on classification of almost complex structures on $4$-manifolds

answered Aug 20, 2011 at 23:55

21 votes

Failure of smoothing theory for topological 4-manifolds

answered Mar 18, 2010 at 7:09

21 votes

Accepted

Complex orientations on homotopy

answered Mar 23, 2010 at 4:07

18 votes

Explanation for the Chern character

answered Mar 17, 2010 at 6:20

13 votes

Accepted

Natural examples of finite dimensional spaces with interesting 2-type

answered Dec 31, 2010 at 22:34

12 votes

Accepted

slice-ribbon for links (surely it's wrong)

answered Mar 22, 2010 at 1:38

10 votes

How are these algebraic and geometric notions of homotopy of maps between manifolds related?

answered Aug 19, 2011 at 22:45

10 votes

Accepted

A problem/conjecture related to 4-manifolds that deserves a name. What name does it deserve?

answered Mar 28, 2010 at 7:15

7 votes

Accepted

Is the following map from Z(G) x H^3(G, C) --> H^2(G, C) ever nontrivial?

answered Aug 20, 2011 at 0:21

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10 Answers

What would the slice-ribbon conjecture imply?

A question on classification of almost complex structures on $4$-manifolds

Failure of smoothing theory for topological 4-manifolds

Complex orientations on homotopy

Explanation for the Chern character

Natural examples of finite dimensional spaces with interesting 2-type

slice-ribbon for links (surely it's wrong)

How are these algebraic and geometric notions of homotopy of maps between manifolds related?

A problem/conjecture related to 4-manifolds that deserves a name. What name does it deserve?

Is the following map from Z(G) x H^3(G, C) --> H^2(G, C) ever nontrivial?