Answer by Martin Argerami for Meaning of "covariant", "contravariant" in...
As someone illiterate in category theory, here is what the statement says to me.The $\rho:A\to B$ is a $*$-homomorphism, this induces a $*$-homomorphism $\tilde\rho:C_0(X,A)\to C_0(X,B)$ by...
View ArticleMeaning of "covariant", "contravariant" in operator algebras
I am reading The Novikov conjecture, the group of volume preserving diffeomorphisms and Hilbert-Hadamard spaces, and I came across a usage of the words "covariant" and "contravariant" that I did not...
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