Pfaff's Problem and Its Generalizations
In its simplest form, the Pfaff problem (formulated by Pfaff in 1819) consists of determining the maximal integrable manifold of a Pfaffian system, i.e. of a system of vector fields in $R^n$. This book gives a solution of this problem and discusses various generalizations, giving an essentially complete treatment of the theory as it was known in 1949.
Kirjan painos kustantajalta loppu. Mahdollisesta uudesta painoksesta ei vielä tietoa.
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