1 votes 1 votes There exists a map $f : \mathbb{Z} \rightarrow \mathbb{Q}$ such that $f$ Is bijective and increasing Is onto and decreasing Is bijective and satisfies $f(n) \geq 0$ if $n \leq 0$ Has uncountable image Set Theory & Algebra tifrmaths2014 functions + – makhdoom ghaya asked Dec 17, 2015 • edited Aug 18, 2020 by soujanyareddy13 makhdoom ghaya 314 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.