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N.A. Izobov (1997)
The existence of linear Pfaff systems whose set of lower characteristic vectors has a positive plane measureDiffer. Equations, 33
(1966)
Translated under the title Topologicheskie vektornye prostranstva
(1976)
Characteristic vectors and sets of functions of two variables and their basic properties
H.H. Schaefer (1971)
Topological Vector Spaces
(1989)
Lineinye uravneniya v polnykh differentsialakh (Linear Total Differential Equations)
P. Lax, H. Grossman, G. Avila (1959)
Theory of functions of a real variable
(1998)
Construction of a linear Pfaff equation with arbitrarily prescribed characteristic and lower characteristic sets
A. Platonov, S. Krasovskii (2016)
Existence of a linear Pfaff system with arbitrary bounded disconnected lower characteristic set of positive Lebesgue m-measureDifferential Equations, 52
N. Izobov, S. Krasovskii, A. Platonov (2008)
Existence of linear Pfaffian systems whose lower characteristic set has positive measure in R3Differential Equations, 44
I.P. Natanson (1974)
Teoriya funktsii veshchestvennoi peremennoi (Theory of Functions of a Real Variable)
(1976)
Elementy teorii funktsii i funktsional’nogo analiza (Elements of Function Theory and Functional Analysis)
(1966)
Topological Vector Spaces, New York: Macmillan
(1983)
Vpolne razreshimye mnogomernye differentsial’nye uravneniya (Completely Solvable Multidimensional Differential Equations)
For any positive integers n ≥ 1 and m ≥ 2, we give a constructive proof of the existence of linear n-dimensional Pfaff systems with m-dimensional time and with infinitely differentiable coefficient matrices such that the characteristic and lower characteristic sets of these systems are given sets that are the graphs of a concave continuous function and a convex continuous function, respectively, defined and monotone decreasing on simply connected closed bounded convex domains of the space ℝ m−1.
Differential Equations – Springer Journals
Published: Nov 25, 2017
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