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E. H. Benabdi, M. Barraa, M. K. Chraibi and A. Baghdad
Maximal numerical range and quadratic elements in a
C
✻
-algebra
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El Hassan Benabdi
M. Barraa
M. K. Chraibi
Abderrahim Baghdad
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Primary
46L05
Secondary
47A12
47A63
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quadratic operator
C
✻
-algebra
numerical range
maximal numerical range
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Abstract