“weak centring”的概念、定义、翻译、参考文献-科学参考

weak centring

Logic

A condition encountered in the field of conditional logic that formalizes an intuition that any possible world $w$ is at least as similar to itself as it is any other. In semantics for conditional logics employing a system of spheres, this means that the world $w$ is a member of every nonempty sphere, i.e.,
- • For all $w$ , if $S_{i} \in $_{w}$ is nonempty, then $w \in S_{i}$ .
When one employs distinct accessibility relation $R_{φ}$ for each formula $φ$ , weak centring is formalized by the condition that:
if $φ$ is true at $w$ then $w R_{φ} w^{'}$ .
This condition can be strengthened to centring, corresponding to the demand that $w$ is the unique point more similar to itself than any other.

单词	weak centring
释义	weak centring Logic A condition encountered in the field of conditional logic that formalizes an intuition that any possible world $w$ is at least as similar to itself as it is any other. In semantics for conditional logics employing a system of spheres, this means that the world $w$ is a member of every nonempty sphere, i.e., • For all $w$ , if $S_{i} \in $_{w}$ is nonempty, then $w \in S_{i}$ . When one employs distinct accessibility relation $R_{φ}$ for each formula $φ$ , weak centring is formalized by the condition that: if $φ$ is true at $w$ then $w R_{φ} w^{'}$ . This condition can be strengthened to centring, corresponding to the demand that $w$ is the unique point more similar to itself than any other.
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