In complex analysis, the Omega constant, a solution of Lambert's W function. In differential geometry, the space of differential forms on a manifold (of a certain degree, usually with a superscript). A variable for a 2-dimensional region in calculus, usually corresponding to the domain of a double integral. See more

ω is defined to be the set of all finite ordinals. This is provably equivalent to the assertion the least infinite ordinal or the least limit ordinal (note that 0 is not a limit ordinal. It is 0 ). It can

The lowercase Omega (ω) is used for: Mathematics: The first transfinite ordinal number, often identified with the set of natural numbers including 0 (sometimes written ω 0). In set theory