tailieunhanh - Báo cáo hóa học: "Research Article Fixed Points of Two-Sided Fractional Matrix Transformations"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Fixed Points of Two-Sided Fractional Matrix Transformations | Hindawi Publishing Corporation Fixed Point Theory and Applications Volume 2007 Article ID 41930 69 pages doi 2007 41930 Research Article Fixed Points of Two-Sided Fractional Matrix Transformations David Handelman Received 16 March 2006 Revised 19 November 2006 Accepted 20 November 2006 Recommended by Thomas Bartsch Let C and D be n X n complex matrices and consider the densely defined map ỘC D X I CXD 1 on n X n matrices. Its fixed points form a graph which is generically in terms of C D nonempty and is generically the Johnson graph J n 2n in the nongeneric case either it is a retract of the Johnson graph or there is a topological continuum of fixed points. Criteria for the presence of attractive or repulsive fixed points are obtained. If C and D are entrywise nonnegative and CD is irreducible then there are at most two nonnegative fixed points if there are two one is attractive the other has a limited version of repulsiveness if there is only one this fixed point has a flow-through property. This leads to a numerical invariant for nonnegative matrices. Commuting pairs of these maps are classified by representations of a naturally appearing discrete group. Special cases . CD DC is in the radical of the algebra generated by C and D are discussed in detail. For invertible size two matrices a fixed point exists for all choices ofC if and only if D has distinct eigenvalues but this fails for larger sizes. Many of the problems derived from the determination of harmonic functions on a class of Markov chains. Copyright 2007 David Handelman. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Contents 1. Introduction . 2 2. Preliminaries . 3 3. New fixed points from old . 8 4. Local matrix units . 10 5. Isolated invariant subspaces . 13 6. Changing solutions . 17 2 Fixed Point Theory and Applications 7. .

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