Signed mean value trace inequalities for Hermitian matrices
Signed mean value trace inequalities for Hermitian matrices
Let be Hermitian matrices, let be a positive integer, and let . For a Hermitian matrix , write and for its positive and negative parts, and write for its absolute value. Signed mean value trace inequalities. The following inequalities should hold:
and
These inequalities would provide the missing ingredient for extending the paper's concentration method to matrix self-bounding functions. The source presents them as needed for that analysis, but gives no resolution, so their status remains open.
Sources & referencesView supporting material
Primary source
Daniel Paulin, Lester Mackey and Joel A. Tropp, “Deriving Matrix Concentration Inequalities from Kernel Couplings”, arXiv:1305.0612 (2013).
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