The Fuglede conjecture holds in ℤp× ℤp
The Fuglede conjecture holds in ℤp× ℤp
In this paper we study subsets E of ޚ d p such that any function f : E → ރ can be written as a linear combination of characters orthogonal with respect to E. We shall refer to such sets as spectral.In this context, we prove the Fuglede conjecture in …