Leggett, Richard W.; Williams, Lynn R. Multiple positive fixed points of nonlinear operators on ordered Banach spaces. (English) Zbl 0421.47033 Indiana Univ. Math. J. 28, 673-688 (1979). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 30 ReviewsCited in 408 Documents MSC: 47H10 Fixed-point theorems 34B15 Nonlinear boundary value problems for ordinary differential equations 45G10 Other nonlinear integral equations Keywords:multiple fixed points; Hammerstein integral operator; fixed point index; boundary value problem; completely continuous nonlinear operators PDF BibTeX XML Cite \textit{R. W. Leggett} and \textit{L. R. Williams}, Indiana Univ. Math. J. 28, 673--688 (1979; Zbl 0421.47033) Full Text: DOI OpenURL