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Abstract

Various nonlinear equations of the types: Tx + Cx = f, Tx + Cx + Sx = f are studied. Results are obtained according to which the range of T + C contains a ball around zero. Other results guarantee that R(T + C) $\subset$ R(T + C + S) and int R(T + C) $\subset$ R(T + C + S).

The underlying space is a Banach space and the methods involve applications of the theories of degree and monotonicity.

Results of Browder, Reich, Kartsatos and other authors are thus extended.

Details

Title
PERTURBATIONS OF MONOTONE OPERATORS IN BANACH SPACES
Author
KERR, DAVID WILLIAM
Year
1987
Publisher
ProQuest Dissertations & Theses
ISBN
979-8-207-18633-7
Source type
Dissertation or Thesis
Language of publication
English
ProQuest document ID
303632303
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.