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ON VON NEUMANN–JORDAN CONSTANTS
- Part of
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- Journal:
- Journal of the Australian Mathematical Society / Volume 87 / Issue 3 / December 2009
- Published online by Cambridge University Press:
- 15 December 2009, pp. 371-375
- Print publication:
- December 2009
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In this note, we provide an example of a Banach space X for which
that is not isomorphic to any Hilbert space, where 
denotes the infimum of all von Neumann–Jordan constants for equivalent norms of X.
that is not isomorphic to any Hilbert space, where 
denotes the infimum of all von Neumann–Jordan constants for equivalent norms of 