Does anyone know how to typeset the arrow in the photo below? It is in Algebra: Chapter 0 by Paolo Aluffi, but I cannot find it anywhere.

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1 Answer 1


It looks like A \stackrel{\sim}{\to} B with the older arrows. Two identical options are below:

A &\slippery B\\
A &\mapping B

where \overset belongs to amsmath. In case of confusion, I choose what amsmath offers for purely psychological reasons.

enter image description here

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