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Differential and Difference Dimension Polynomials (Paperback, Softcover reprint of hardcover 1st ed. 1999)
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Differential and Difference Dimension Polynomials (Paperback, Softcover reprint of hardcover 1st ed. 1999)
Series: Mathematics and Its Applications, 461
Expected to ship within 10 - 15 working days
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The role of Hilbert polynomials in commutative and homological
algebra as well as in algebraic geometry and combinatorics is well
known. A similar role in differential algebra is played by the
differential dimension polynomials. The notion of differential
dimension polynomial was introduced by E. Kolchin in 1964 [KoI64]'
but the problems and ideas that had led to this notion (and that
are reflected in this book) have essentially more long history.
Actually, one can say that the differential dimension polynomial
describes in exact terms the freedom degree of a dynamic system as
well as the number of arbitrary constants in the general solution
of a system of algebraic differential equations. The first attempts
of such description were made at the end of 19th century by Jacobi
[Ja890] who estimated the number of algebraically independent
constants in the general solution of a system of linear ordinary
differential equations. Later on, Jacobi's results were extended to
some cases of nonlinear systems, but in general case the problem of
such estimation (that is known as the problem of Jacobi's bound)
remains open. There are some generalization of the problem of
Jacobi's bound to the partial differential equations, but the
results in this area are just appearing. At the beginning of the
20th century algebraic methods in the theory of differen tial
equations were actively developed by F. Riquier [RiqlO] and M.
General
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