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Dual Extremum Principles for Non-negative Unsymmetric Operators

Ismael HerreraMichael J. Sewell

出版	University of Wisconsin-Madison. Mathematics Research Center, 1977
URL	http://books.google.com.hk/books?id=dcRiNwAACAAJ&hl=&source=gbs_api

註釋

Dual extremum principles are constructed for non-negative unsymmetric operator equations, in terms of functional-valued operators and saddle functionals. Extremum principles for the heat equation and the wave equation are given as illustrations. (Author).