On the Rankin–Sobolev problem on extrema of the Epstein zeta-function. An estimate for the origin of a ray of extremality of the second perfect Voronoi form

S. Sh. Shushbaev


UDC: 511:513.82

Received: 01.03.1988

 English version: Siberian Mathematical Journal, 1990, 31:5, 833–839

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