# 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.

Revised on September 27, 2012 18:50:13 by Jamie Vicary (81.135.52.3)