Rigidity for Appell's Hypergeometric Series F4
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概要
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Appell's hypergeometric series F4 defines a multi-valued function in P2C$\\backslash$L with some hypersurface L, and then defines a local system over it. We show that the local system is physically rigid. Using this fact, we get a monodromy representation of F4 without using any analytic expression such as integral expression of F4. A condition for the irreducibility of the monodromy group is obtained. Relations to rigidity of several sections are considered.
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