Definition:Infinite Class

Definition

Let $A$ be a class.

$A$ is an infinite class if and only if $A$ is not a finite class.

Also see

• Definition:Finite Class

Sources

• 2010: Raymond M. Smullyan and Melvin Fitting: Set Theory and the Continuum Problem (revised ed.) ... (previous) ... (next): Chapter $3$: The Natural Numbers: $\S 6$ Finite Sets