Lattice sum
= Lattice sum
A lattice sum is a <series> indexed by the points of a <lattice>. For example, comparison with annular lattice-point counts shows that $\sum_{(m,n)\ne(0,0)}(m^2+n^2)^{-s}$ converges when $s>1$.
= Lattice sum
A lattice sum is a <series> indexed by the points of a <lattice>. For example, comparison with annular lattice-point counts shows that $\sum_{(m,n)\ne(0,0)}(m^2+n^2)^{-s}$ converges when $s>1$.