1. English notation of Big-Oh:
Let T(n) the worst-case running time of an algorithm, n= 1, 2, 3, ......
T(n) = O(f(n)) if enventually (for sufficiently large n ), T(n) is bounded above by a constant multiple of f(n)
2. Formal definition of Big-Oh:
T(n) = O(f(n)) iif there exist contants c, n0 > 0 , such that:
T(n) <= c f(n) , for all n >= n0
3. Formal definition of Omega Notation:
T(n) = Ω(f(n)) iif there exist contants c, n0 > 0 , such that:
T(n) >= c f(n), for all n >= n0
4. Formal definition of Theta Notation:
T(n) = Θ(f(n)) iif there exist contants c1,c2, n0 > 0 , such that: c2 f(n) >= T(n) >= c1 f(n), for all n >= n0
5. Formal definition of Little-Oh Notation:
T(n) = o(f(n)) iif for all c >0 , there exists contant n0 > 0 , such that:
T(n) <= c f(n) , for all n >= n0
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