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math-ph2008★ 1 cited
Not each sequential effect algebra is sharply dominating
Shen Jun, Wu Junde
Let be an effect algebra and be the set of all sharp elements of . is said to be sharply dominating if for each there exists a smallest element $\widehat{…
math-ph2008★ 16 cited
The Uniqueness Problem of Sequence Product on Operator Effect Algebra
Liu Weihua, Wu Junde
A quantum effect is an operator on a complex Hilbert space that satisfies . We denote the set of all quantum effects by . In this paper we prove, Th…