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Publication:3689748
zbMath0572.47044MaRDI QIDQ3689748
Publication date: 1984
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
nonlinear perturbationnoninvertible linear operatorapproximating equationcompactness of the generalized inverseconnect Petryshyn's theory of A-proper mappings with Mawhin's method of the coincidence degreeFredholm operator techniquesperiodic solutions of the wave equations
Monotone operators and generalizations (47H05) Equations involving nonlinear operators (general) (47J05) Nonlinear elliptic equations (35J60) (Semi-) Fredholm operators; index theories (47A53) Numerical solutions to equations with nonlinear operators (65J15)
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