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Differentiable Maps with Isolated Critical Points Are Not Necessarily Open in Infinite Dimensional Spaces by Feng, Chunrong; Li, Liangpan is a scholarly article available to read on EtoBox.

What is Differentiable Maps with Isolated Critical Points Are Not Necessarily Open in Infinite Dimensional Spaces about?

Jean Saint Raymond asked whether continuously differentiable maps with isolated critical points are necessarily open in infinite dimensional (Hilbert) spaces. We answer this question negatively by constructing counterexamples in various settings.

Author

Feng, Chunrong; Li, Liangpan

Published

2021

Language

EN