
doi: 10.4171/zaa/560
We extend the Zarantonello numerical range to the case of reflexive Banach space opera-tors, and study the approximation-solvability of nonlinear equations relating to the results of Zeidler (1990).
normed linear spaces, Iterative procedures involving nonlinear operators, approximation-solvability, Numerical solutions to equations with nonlinear operators, Hilbert space, reflexive Banach space, Zarantonello numerical range
normed linear spaces, Iterative procedures involving nonlinear operators, approximation-solvability, Numerical solutions to equations with nonlinear operators, Hilbert space, reflexive Banach space, Zarantonello numerical range
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