55

Answers

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4

Nonhomeomorphic CW-complexes that are “stably” homeomorphic

1

Understand Witten’s “QFT and Jones Polynomials” - how does he get to the twisted Dirac operator L_{-}?

0

Is every long exact sequence of homotopy groups induced by a fibration?

11

Status of PL topology

3

Algebraic De Rham cup product versus Betti cup product

3

slice knots, what does the locally flat condition say?

10

Rational Homology of a Covering Space

2

Stiefel-Whitney classes of a projective space bundle

2

When do infinitesimal deformations lift to global deformations?

2

Characteristic Classes of a Fibered Sum

4

Knot symmetries and the Alexander polynomial

4

The relationship between group cohomology and topological cohomology theories

5

Generalised linking numbers (where they shouldn’t be)

0

Existence of sequence of examples of braking ‘Cancellation law in homeomorphic products’

10

Usefulness of using TQFTs

1

Index theorem interpretation of the spectral flow for a pseudo holomorphic curve

6

Laplace-deRham operator for 1-forms on the sphere

3

Witten’s QFT and Jones Poly paper

5

Computing H_2 from pi_1=Z and pi_2

2

Are braid links proper links?

1

fundamental group and complete invariant of irreducible 3-manifolds

3

Instanton homology - reference request

8

Proofs of Rohlin’s theorem (an oriented 4-manifold with zero signature bounds a 5-manifold)

5

Are there examples of non-orientable manifolds in nature?

6

Betti number and harmonic forms

27

Which manifolds are homeomorphic to simplicial complexes?

2

Obstruction Cocycles

4

Intuition on finite homotopy groups

15

Refereeing a Paper

5

Alexander polynomial or Reidemeister torsion for knotted surfaces?