Big Omega function

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The notation has at least three meanings in mathematics:

  • means that the function dominates in some limit, see Big O notation. In this context is referred to as a lower bound.
  • is the total number of prime factors of , counting prime factors with multiplicity
  • may refer to the Omega function, the inverse of , also known as the Lambert W function denoted .
    • , related to the Lambert W Function, is called the Wright Omega Function