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For tensor contractions, the intermediate tensor that is constructed gets deduced symmetries via
https://github.com/ValeevGroup/SeQuant/blob/42558e9f7ca66f76145427d4c8a1bf06715c3029/SeQuant/core/eval…
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**Description of bug**
@mtfishman I found more situations where Contracting a tensor with Diag tensor fails. It looks like the result gives the right numbers but the ordering can be incorrect.
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In `Einsum.jl`
```julia
@einsum n[i,j,k] = hg[i,m]*hg[j,m]*hg[k,m]
```
defines a star shaped contraction, which will produce a rank 3 tensor.
However, `@tensor` in `TensorOperations.jl` will ra…
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In my code I used intermediates I3/I4
```
ierr=exatns_tensor_create(I3,"I3",id%vvoo,root%vvoo,EXA_DATA_KIND_C8)
ierr=exatns_tensor_create(I4,"I4",id%vvoo,root%vvoo,EXA_DATA_KIND_C8)
…
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#22760 added support for `__matmul__` in the coercion model.
We should start using it.
First step: Review the semantics of this operator in major Python software for matrix and tensor computation …
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When calling `TensorNetwork.contract()` or any related function that filters down to `tensor_contract()`, I don't think it is currently possible to shut off caching of contraction expressions. If the …
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**Is your feature request related to a problem? Please describe.**
The state vector simulator for MBQC inherently exhibits slower performance compared to that for quantum circuits, primarily attrib…
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For some reason the API has it that
![equation](https://latex.codecogs.com/gif.latex?g_%7B%5Cmu%5Cnu%7Dg%5E%7B%5Cmu%5Cnu%7D%20%5Cne%20g%5E%5Cmu_%5Cmu)
Currently, the left hand side yields the corr…
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Is _opt_einsum.paths.optimal_ supposed to support non-standard Einstein summations (when an index occurs in more than two tensors)?
Consider contracting 3 tensors: `ij,j,jk->`:
First, DFS looks …
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Hi,
I made a comparison for the contraction `A[a,b] B[b,c,d,e] = C[a,c,d,e]`, where `B[:,:,d,e] = B[:,:,e,d]`. I used Fortran by loop over external indices `d,e` to utilize the symmetry then `dge…