Approximating tau-functions by theta-functions

Dubrovin, B

Dubrovin, B (reprint author), SISSA, Via Bonomea 265, I-34136 Trieste, Italy.; Dubrovin, B (reprint author), Moscow MV Lomonosov State Univ, NN Bogolyubov Lab Geometr Methods Math Phys, Moscow, Russia.

COMMUNICATIONS IN NUMBER THEORY AND PHYSICS, 2019; 13 (1): 203

Abstract

We prove that the logarithm of an arbitrary tau-function of the KdV hierarchy can be approximated, in the topology of graded formal series by the loga......

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