I'd like to be able to use a wavy arrow, one that is a bit rounder and has a slower oscillation than
rightsquigarrow: ideally one that has the exact same wave as a tilde, and ends in an arrowhead, and use it in equations in the same way as
a \sim b.
Is there an easy way to do this?
leadsto from murray's answer is very close. To be even more precise – is there a way to adjoin an arrowhead to a tilde? I'll have a look at Steven's suggestions later today.