Conformally closed Finsler spaces.
Galois representations on profinite braid groups on curves.
A generalization of Jaeger-Nomura's Bose Mesner algebra associated to type II matrices
A category generalizing Jaeger-Nomura algebra associated to a spin model is given. It is used to prove some equivalence among the four conditions by Jaeger-Nomura for spin models of index 2.
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