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The conjecture that Banach spaces are isomorphic to their hyperplanes
A Banach space $\mathbb{X}$ is isomorphic to its hyperplanes if it is isomorphic to every closed subspace of codimension one. Banach's hyperplane conjecture. Every Banach space sho…
Conjectureopenbanach-spaces isomorphic-embeddingsarXiv posted 2 days ago

The conjecture that Banach spaces are isomorphic to their hyperplanes