Some characteristic and non-characteristic properties of inner product spaces
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F. Javier Alonso Romero, Carlos Benítez Rodríguez (1986)
Extracta Mathematicae
Raymond Freese, Grattan Murphy (1983)
Fundamenta Mathematicae
J. Waille (1873)
Nouvelles annales de mathématiques : journal des candidats aux écoles polytechnique et normale
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