Conj for UniTensor

[chiamin]

I found that Conj seems not supporting UniTensor; is it true? Here is code

import cytnx

T = cytnx.arange(2*3*4).reshape(2,3,4)
uT = cytnx.UniTensor(T, labels=["a","b","c"])
uT2 = cytnx.linalg.Conj(uT)
print(uT)
print(uT2)

and the error

Traceback (most recent call last):
  File "/home/chiamin/project/2023/cytnx/test.py", line 5, in <module>
    uT2 = cytnx.linalg.Conj(uT)
TypeError: Conj(): incompatible function arguments. The following argument types are supported:
    1. (Tin: cytnx.cytnx.Tensor) -> cytnx.cytnx.Tensor

Invoked with:

Another comment. I think Conj should not be defined in linalg since it is not a linear algebra operator.

[kaihsin]

But Conj is a linear algebra operation?

[kaihsin]

currently, for UniTensor, Conj is a member function. ofc we can wrap a linalg function for it to make it consistent?

[chiamin]

For Tensor, Conj is defined in cytnx.linalg

import cytnx

T = cytnx.arange(2*3*4).reshape(2,3,4)
T2 = cytnx.linalg.Conj(T)
print(T2)

OK I didn't know that there is a Conj member function. I confirm that the following code works.

import cytnx

T = cytnx.arange(2*3*4).reshape(2,3,4)
uT = cytnx.UniTensor(T, labels=["a","b","c"])
uT2 = uT.Conj()
print(uT)
print(uT2)

I was thinking to make it a global function in Cytnx, but I think a member function is also good.

[kaihsin]

I think we need this, but its not urgent

[chiamin]

Do you think we can make it before the draft is out? Conj is necessary for some applications so I think it is better to have it before the draft is out.

[kaihsin]

How about transpose and dagger? Those are ill-defined for normal tensor

…

On Tue, Jul 25, 2023 at 7:59 PM chiamin ***@***.***> wrote: Do you think we can make it before the draft is out? Conj is necessary for some applications so I think it is better to have it before the draft is out. — Reply to this email directly, view it on GitHub <#194 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFCX3SJDFD75WSZ467Z3TT3XSBMXPANCNFSM6AAAAAA2TUMWE4> . You are receiving this because you modified the open/close state.Message ID: ***@***.***>

[jeffry1829]

#207