Matt Fishman

> Great design ideas & missing features. This will make it all a lot nicer, and the AutoType feature is something I did have in mind to add eventually. >...

Another design question I have been thinking about is that in principle it is not necessary for us and other users with custom ITensor types to overload `HDF5.read` and `HDF5.write`....

Yes, we were discussing that here: https://github.com/mtfishman/ITensorTDVP.jl/issues/7#issuecomment-1062470077_ in the context of TDVP. My plan for that package is actually to make the `tdvp` function generic so that it can encompass...

An interesting related question is if there is any way for us to reach the efficiency of `SparseArrays`. Even if we remove the timing of the fermion sign check we...

@emstoudenmire @awietek maybe we could meet and put together some simple examples.

I know Miles is aware, but just for general knowledge and as a reminder, this is what happens if you try to naively truncate a Hamiltonian-like MPO: ```julia julia> s...

A temporary workaround to truncate these types of MPOs without a native AutoMPO fix is the following: ```julia s = siteinds("S=1/2", 200) M = MPO(AutoMPO() + ("Id", 1), s) lognormM...

That makes sense that it would require a special code path within AutoMPO. Agreed that ideally this would be within AutoMPO. Something to consider for this case of a product...

Probably it isn't common for gates, but what's wrong with having unitaries with nonzero flux? ```julia julia> i = Index(QN(0) => 2) (dim=2|id=88) 1: QN(0) => 2 julia> j =...

Sure, that's fair. Definitely not pushing the need for a nonzero flux unitary gate. The proposal was to use zero flux by default, and allow someone to specify a nonzero...