A curved arrow symbol with a wavy pattern indicating weak convergence or homotopy relations in topology and analysis.
Examples
Weak convergence notation in functional analysis
x_n \rightsquigarrow x \text{ as } n \to \infty
Probability distribution convergence
X_n \rightsquigarrow N(0,1) \text{ in distribution}
Homotopy relation between maps
f \rightsquigarrow g \text{ rel } \partial X