Abstract
We introduce the notion of d-concavity, d ≥ 0, and prove that the nonsymmetric Monge-Ampere type function of matrix variable is concave in an appropriate unbounded and convex set. We prove also the comparison principle for nonsymmetric Monge-Ampere type equations in the case when they are so-called δ-elliptic with respect to compared functions with 0 ≤ δ < 1.
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