“…A function u : U → (−∞, ∞] is said to be multiply superharmonic if u is lower semicontinuous, u > ∞, u ≡ ∞ in any connected component of U , and for any fixed variable, u is hyperharmonic in the other variable. See [7] and [9].…”
“…A function u : U → (−∞, ∞] is said to be multiply superharmonic if u is lower semicontinuous, u > ∞, u ≡ ∞ in any connected component of U , and for any fixed variable, u is hyperharmonic in the other variable. See [7] and [9].…”
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