≂

A minus sign (−) above a tilde (∼).

≂

In mathematics, the symbol ${\displaystyle \eqsim }$ (\eqsim) usually indicates that two quantities are equal up to constants: ${\displaystyle A\eqsim B}$ means that there exist two positive constants ${\displaystyle c_{1}}$ and ${\displaystyle c_{2}}$ such that ${\displaystyle c_{1}B\leq A\leq c_{2}B}$