In[*]:d6h = GTInstallGroup[D6h, GORepresentation -> “SU(2)”]
In[*]:GTGetIreps[d6h]
Out[*]:It is not a Group.
Why I can’t get the irreducible representations of the double group of D6h?
But it’s work for D4h,C3v,O …..
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Matthias Geilhufe Answered question 29. October 2022
Apparently, there seems to be a problem for a few groups using the induction method, which is implemented in GTGetIreps. However, with the recently published bug fix, the command GTGetIrep (note, no “s” at the end) got significantly improved. The “Cornwell” method is able to compute the representation matrices of the group in question. I give an example below:
Matthias Geilhufe Answered question 29. October 2022