Contents

# Contents

## Idea

The concept of $2$-Hilbert space is supposed to be a categorification of that of Hilbert space, or at least of finite dimensional such: inner product spaces.

One way to define this is as a Kapranov-Voevodsky 2-vector space where the hom-functor plays the role of the categorified inner product (Baez 96).

More generally this works for semisimple categories (…)

## References

See

for one approach.

Last revised on September 24, 2018 at 10:46:33. See the history of this page for a list of all contributions to it.