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Restricted numerical shadow

Introduction

Combining the ideas of the restricted numerical range with the numerical shadow one is led in a natural way to the definition of a restricted numerical shadow, PAR(z):=Rdμ(ψ) δ(zψ|A|ψ), where R is a selected subset of Ωd, the set of dimension d pure quantum states.

Examples

For a full list of examples of restricted numerical shadows, go here: examples

Interesting shadows


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