Definition:Refinement of Cover/Finer Cover

From ProofWiki
Jump to navigation Jump to search

Definition

Let $S$ be a set.

Let $\UU = \set {U_\alpha}$ and $\VV = \set {V_\beta}$ be covers of $S$.

Let $\VV$ be a refinement of $\UU$.


Then $\VV$ is finer than $\UU$.