The generalized numerical radius associated with a positive semi-definite function
Chi Fai Chan · Linear and Multilinear Algebra · 1992
Let 1 ≥ m≥ n, and let df be the generalized matrix function associated with a non-zero positive semi-definite function f G− C, where Gis a subgroup ot Sm. For an n-square complex matrix A, define Some inequalities involving rf (A) are investigated.