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Results tagged with association-schemes
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user 141867
2
votes
0
answers
91
views
Non-translation association schemes duality
In his thesis (1973), P. Delsarte defines a duality construction for association schemes. Nevertheless, this duality construction works only if some special regularity condition is satisfied. I find t …
- 211
1
vote
0
answers
67
views
Commutative Schur ring over non-abelian group
Is there a commutative (or even symmetric) Schur ring $S\subset\mathbb{C}G$ over a non-abelian group $G$, which is not isomorphic (preserving both the products) to a Schur ring $S'\subset\mathbb{C}G'$ …
- 211