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The hypothesis of the possible p-adic structure of spacetime is considered. The p-adic Veneziano amplitude is proposed and the main properties of the p-adic string theory are discussed. The analogous questions on the Galois field are also discussed. In this case the Jacobi sum plays the role of the Veneziano amplitude which can be expressed by means of the l-adic cohomology of the Fermat curves. The corresponding vertex operator is given.
И. В. Волович (Wed,) studied this question.