homotopy theory, (∞,1)-category theory, homotopy type theory
flavors: stable, equivariant, rational, p-adic, proper, geometric, cohesive, directed…
models: topological, simplicial, localic, …
see also algebraic topology
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A real structure on a complex vector space is an antilinear map which is an involution.
Equivalently this is a real vector space and an isomorphism of with its complexification.
Here is the eigenspace of for eigenvalue 1 and is the eigenspace for eigenvalue -1.
More generally in spectral geometry (via spectral triples) and KR-theory:
Last revised on May 9, 2018 at 16:01:24. See the history of this page for a list of all contributions to it.