manifolds and cobordisms
cobordism theory, Introduction
Definitions
Genera and invariants
Classification
Theorems
The signature of an oriented manifold of dimension , is the signature of the quadratic form which is the intersection pairing in integral cohomology
If the signature of a manifold with dimension not divisible by 4 is taken to be 0.
This defines a genus: the signature genus.
(…)
manifold dimension | invariant | quadratic form | quadratic refinement |
---|---|---|---|
signature genus | intersection pairing | integral Wu structure | |
Kervaire invariant | framing |
See also
Last revised on March 23, 2019 at 14:59:47. See the history of this page for a list of all contributions to it.