Somnath Basu's user avatar
Somnath Basu's user avatar
Somnath Basu's user avatar
Somnath Basu
  • Member for 14 years, 4 months
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37 votes
Accepted

Spaces with same homotopy and homology groups that are not homotopy equivalent?

23 votes

finite generated group realized as fundamental group of manifolds

21 votes

What are your favorite puzzles/toys for introducing new mathematical concepts to students?

12 votes

Analogue to covering space for higher homotopy groups?

10 votes

Is there a good way to understand the free loop space of a sphere?

9 votes

One-step problems in geometry

9 votes

Best online mathematics videos?

8 votes

Applications of string topology structure

8 votes
Accepted

Homology of classifying space of spin group BSpin(n)

7 votes

How and how much do the notations and diagrams influence our understanding of mathematical concepts?

7 votes

Euler characteristic of orbifolds

6 votes

Euler characteristic, Gauss-Bonnet, and a product formula

5 votes

subgroup of SU(N) with maximal manifold dimension

5 votes

Magic trick based on deep mathematics

4 votes

Homotopy groups of smooth manifolds?

4 votes

Rational homotopy theory of a punctured manifold

3 votes

Euler Characteristic of a manifold with non-vanishing vector field,

3 votes

Realisability cohomological class as product or as immersed sphere

2 votes

Fibrewise homotopy-equivalence of unit sphere bundles vs isomorphism of tangent bundles

2 votes

Which topics/problems could you show to a bright first year mathematics student?

2 votes

Why must a reducible flat SU(2)-connection over a homology sphere be trivial?

2 votes

prime ideals in C([0,1])

2 votes

Cohomology classes annihilated by pullbacks

1 vote

What is known about the intersection pairing on H^{mid}?

1 vote

What would be your suggestion of textbooks in Lie groups and Galois theory?

1 vote

Equivariant maps inducing isomorphism in integral cohomology

1 vote

Obstruction Cocycles

1 vote

When is there a deRham duality relation between the fundamental class and a top form.?

1 vote

Examples of categorification

1 vote

bundle over a chain