activity
19992005
most citedA Li-type criterion for zero-free half-planes of Riemann's zeta function

2 citations · 2 across the 1 of their papers we have counts for

collaborators
Showing math.APShow all

1 paper · 1 filter

math.AP2001

Characterization of harmonic and subharmonic functions via mean-value properties

Pedro Freitas, Joao Palhoto Matos

We give a characterization of harmonic and subharmonic functions in terms of their mean values in balls and on spheres. This includes the converse of an inequality of Beardon's for…