Sign up ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Who invented the brilliant $\mapsto$ notation for describing a function's action on a point, as in $x \mapsto x^2$?

This is in some sense a counterpart to Who came up with the arrow notation $x \rightarrow y$?

share|cite|improve this question
It could have only been this guy – Mike F Jul 26 '13 at 1:53
And further, why do both it and lambda expressions exist? – James Wood Jul 18 '14 at 12:11

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.