\asymp
The symbol \asymp is used to denote that two quantities are asymptotically equivalent, meaning they behave similarly as they approach a limit, often infinity.
Functions f and g are asymptotically equivalent as x approaches infinity.
f(x) \asymp g(x)
Sequences a_n and b_n are asymptotically equivalent as n approaches infinity.
a_n \asymp b_n
The expression x^2 + x is asymptotically equivalent to x^2 as x approaches infinity.
x^2 + x \asymp x^2