Intermediate Algebra (12th Edition)

$p=\{ ...,-2,-1,0,1,2 \}$
Integers are the negative, zero, and positive numbers which include $\{...,-3,-2,-1,0,1,2,3...\}$. Hence, the integers, $p$, less than $3$ are \begin{array}{l}\require{cancel} p=\{ ...,-2,-1,0,1,2 \} .\end{array}