# nLab 2-Hilbert space

A $2$-Hilbert space is a categorification of a Hilbert space. It is a Kapranov-Voevoedsky 2-vector space with extra structure, although often defined in a very different way.

See

for one approach.

Last revised on July 1, 2017 at 06:52:23. See the history of this page for a list of all contributions to it.