Matt Fishman

My understanding is that https://scipost.org/SciPostPhysCore.4.1.004/pdf is focused on the problem of truncating, not expanding, the bond dimension of an MPS. From what I can tell, the algorithm assumes you already...

Yes, it is much clearer how it could work without symmetries, since you can just select a bond dimension larger than the one you have. You could just apply the...

I guess you could mix the two strategies, by first expanding the bond dimension using the subspace expansion we are using, and then variationally optimize within the expanded tensor space...

I was going to suggest that as an option based on our discussion in #31. We could always convert an `InfiniteITensorSum` into an `InfiniteMPOSum` internally, so the code is always...

In the end, it would be best to directly use just a single MPO, so I think it is up to you. It sounds like you've made good progress on...

What is the dependency conflict you see? Could you share an output of the code you ran, the packages you have installed, the error you got, etc.? Ideally users should...

It sounds like an impressive list of features you've developed. My main reaction is that I am trying to minimize my maintenance burden from this package and others so I...

> On Thu, Feb 23, 2023 at 10:11 PM Matt Fishman ***@***.***> wrote: > - compression of iMPOs using InfiniteMPOMatrix and the approach by > Parker, Cao et Zaletel in...

My ultimate plan has always been to make the `CelledVector` type more general by defining it like this: ```julia struct CelledVector{T,F}

Looks like that error shows that you are using the site type `"Fermions"` instead of `"Fermion"`. This works: ```julia julia> using ITensors julia> s = siteind("Fermion") (dim=2|id=199|"Fermion,Site") julia> @show op("N",...