Factoring the identity operator on a subspace of
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Piotr Mankiewicz (1989)
Studia Mathematica
Martínez-Abejón, Antonio, Pello, Javier (2003)
Annales Academiae Scientiarum Fennicae. Mathematica
Tomczak-Jaegermann, Nicole (1998)
Documenta Mathematica
Béla Bollobás (1972)
Elemente der Mathematik
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