Propagation of zeros by the weak Harnack inequality
= Propagation of zeros by the weak Harnack inequality
For a nonnegative <weak supersolution> with zero forcing, the <Weak Harnack inequality> makes zero <essential infimum> on an interior ball imply vanishing almost everywhere on that ball. An overlapping ball then has zero <essential infimum> too. Chains of overlapping interior balls propagate the vanishing through a <connected> domain.