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arXiv 0903.5116math-phmath.LOmath.MPmath.QAquant-ph
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关于序列效应代数的注记

Remarks on the sequential effect algebras

Shen Jun, Wu Junde

摘要:

本文首先肯定地回答了Gudder教授在2005年提出的关于子序列效应代数的一个公开问题。也就是说,我们证明了如果$(E,0,1, \oplus, \circ)$是序列效应代数,$A$是$E$的交换子集,那么由$A$生成的子序列效应代数$\bar{A}$也是交换的。接下来,我们还研究了以下唯一性问题:如果$na=nb=c$对于某个正整数$n\geq 2$,那么在什么条件下$a=b$成立?证明了若$c$是$E$和$a|b$的锐元,则有$a=b$ .我们还给出了两个例子来说明上述两个条件都不能丢弃。

英文摘要:

In this paper, first, we answer affirmatively an open problem which was presented in 2005 by professor Gudder on the sub-sequential effect algebras. That is, we prove that if $(E,0,1, \oplus, \circ)$ is a sequential effect algebra and $A$ is a commutative subset of $E$, then the sub-sequential effect algebra $\bar{A}$ generated by $A$ is also commutative. Next, we also study the following uniqueness problem: If $na=nb=c$ for some positive integer $n\geq 2$, then under what conditions $a=b$ hold? We prove that if $c$ is a sharp element of $E$ and $a|b$, then $a=b$. We give also two examples to show that neither of the above two conditions can be discarded.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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