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If X is a smooth, reflexive, real Banach space such that a relation A in X × X X \times X is accretive iff A − 1 {A^{ - 1}} is accretive, then X is isomorphic to a Hilbert space.
Duality and reflexivity in normed linear and Banach spaces, Inner product spaces and their generalizations, Hilbert spaces, Monotone operators and generalizations
Duality and reflexivity in normed linear and Banach spaces, Inner product spaces and their generalizations, Hilbert spaces, Monotone operators and generalizations
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 1 | |
popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |