Some classificational problems in four-dimensional geometry: distributions, almost complex structures and Monge-Ampere equations
Boris S. Kruglikov
Abstract
In this paper we consider three deeply connected classificational problems on four-dimensional manifolds. First we consider and describe locally regular distributions. Second we give a classification of almost complex structures of general position in terms of distributions. Finally we classify nondegenerate Monge-Ampere equations with two variables in terms of e-structures.
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