Geodesic
Numerical range and related nonlinear functional equations
Czechoslovak Mathematical Journal, Tome 42 (1992) no. 3, pp. 503-513

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MR Zbl
DOI : 10.21136/CMJ.1992.128350
Classification : 39B52, 47A12, 47H09, 47H15, 47H17, 47J05 
Verma, Ram U. Numerical range and related nonlinear functional equations. Czechoslovak Mathematical Journal, Tome 42 (1992) no. 3, pp. 503-513. doi: 10.21136/CMJ.1992.128350
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