Comments (1)
Right, this won't work. The immediate error is that it tries to define a function rhs(a,b,a,c,b) = a[a, c] * conj(b[c, b])
(to infer the element type), but later on it will write for b in axes(b,2) ... acc += a[a, c] * conj(b[c, b]; ...
which also won't work.
It wouldn't be all that easy to check & correct for this, as you are allowed to write things like this:
@tullio out[a, b] := exp(im * pi * a / size(A,1)) * A[a, c] * B[c, b]
TensorOperations doesn't allow this, and throws away the index letters. In fact you can write @tensor out[1,2] := a[1,3] * conj(b[3,2])
.
One simple work-around is that you can add primes to indices, ascii i'
is normalised to unicode iā²
(when inside [...]
), so this works:
@tullio out[a', b'] := a[a', c] * conj(b[c, b'])
from tullio.jl.
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from tullio.jl.