Abstract
New q-series in the spirit of Jacobi have been found in a publication first published in 1884 written in Russian and translated into English in 1928. This work was found by chance and appears to be almost totally unknown. From these entirely new q-series, fresh lattice sums have been discovered and are presented here.
Highlights
A Short History of Lattice SumsThe Jacobian θ-functions ∞ θ2 = θ2 ( q ) = ∑ q(m−1/2)= 2q1/4 (1 + q2 + q6 . . . + qn(n+1) . . . , (1)= 1 + 2q + 2q4 + 2q9 + 2q16 . . . , (2) −∞ θ3 = θ3 ( q ) =
These sums have become known as lattice
Just as the q-series derived by Jacobi for products of θ-functions can be transformed into a lattice sum, so may the results of Nazimov
Summary
These sums have become known as lattice The Madelung constant is an example of a three-dimensional lattice sum. The representation of lattice sums by θ series was put on a more formal basis by use of the Mellin transform Ms defined by
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