f(n,m,...) = O(g(n,m,...)) means that there exists a constant "c", for which c * g(n,m,...) >= f(n,m,...) is true for large enough n,m,... #### f(n,m,...) = Ω(g(n,m,...) means that there is .... c * g(n,m,...) <= f(n,m,...) #### f(n,m,...) = Θ(g(n,m,...)) means that f(n,m,...) = O( g(n,m,...) ) and f(n,m,...) = Ω( g(n,m,...) )