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  2. Omega constant - Wikipedia

    en.wikipedia.org/wiki/Omega_constant

    The omega constant is a mathematical constant defined as the unique real number that satisfies the equation = It is the value of W(1), where W is Lambert's W function. The name is derived from the alternate name for Lambert's W function, the omega function. The numerical value of Ω is given by

  3. Chaitin's constant - Wikipedia

    en.wikipedia.org/wiki/Chaitin's_constant

    A real number is random if the binary sequence representing the real number is an algorithmically random sequence. Calude, Hertling, Khoussainov, and Wang showed [6] that a recursively enumerable real number is an algorithmically random sequence if and only if it is a Chaitin's Ω number.

  4. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    A mathematical constant is a key number whose value is fixed by an unambiguous definition, ... Omega constant 0.56714 32904 09783 ... where the sequence a n is given ...

  5. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    the omega constant 0.5671432904097838729999686622... [66] an asymptotic lower bound notation related to big O notation; in probability theory and statistical mechanics, the support; a solid angle [67] [68] the omega baryon; the arithmetic function counting a number's prime factors counted with multiplicity; the density parameter in cosmology [69]

  6. Glossary of set theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_set_theory

    2. An inductive definition is a definition that specifies how to construct members of a set based on members already known to be in the set, often used for defining recursively defined sequences, functions, and structures. 3. A poset is called inductive if every non-empty ordered subset has an upper bound infinity axiom See Axiom of infinity.

  7. Transcendental number - Wikipedia

    en.wikipedia.org/wiki/Transcendental_number

    Any non-computable number, in particular: Chaitin's constant. Constructed irrational numbers which are not simply normal in any base. [30] Any number for which the digits with respect to some fixed base form a Sturmian word. [31] The Prouhet–Thue–Morse constant [32] and the related rabbit constant. [33] The Komornik–Loreti constant. [34]

  8. Mathematical constant - Wikipedia

    en.wikipedia.org/wiki/Mathematical_constant

    The circumference of a circle with diameter 1 is π.. A mathematical constant is a number whose value is fixed by an unambiguous definition, often referred to by a special symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]

  9. Prime omega function - Wikipedia

    en.wikipedia.org/wiki/Prime_omega_function

    In number theory, the prime omega functions and () count the number of prime factors of a natural number . Thereby ω ( n ) {\displaystyle \omega (n)} (little omega) counts each distinct prime factor, whereas the related function Ω ( n ) {\displaystyle \Omega (n)} (big omega) counts the total number of prime factors of n , {\displaystyle n ...