In physics:
1. For ohm – SI unit of electrical resistance; formerly also used upside down (℧) to represent mho, the old name for the inverse of an ohm (now siemens with symbol S) used for electrical conductance. Unicode has a separate code point for the ohm sign (U+2126, Ω), but it is only included for backwards compatibility and the Greek uppercase omega character (U+03A9, Ω) is preferred.[5]
2. In statistical mechanics Ω refers to the multiplicity (number of microstates) in a system.
3. The solid angle or the rate of precession in a gyroscope.
4. In particle physics to represent the Omega baryons.
5. In astronomy (cosmology) Ω refers to the density of the universe, also called the density parameter.
6. In astronomy (orbital mechanics), Ω refers to the longitude of the ascending node of an orbit
In mathematics and computer science:
1. In complex analysis, the Omega constant, a solution of Lambert's W function
2. A variable for a 2-dimensional region in calculus, usually corresponding to the domain of a double integral.
3. In topos theory, the (codomain of the) subobject classifier of an elementary topos.
4. In combinatory logic, the looping combinator, (λ x. x x) (λ x. x x)
5. In group theory, the omega and agemo subgroups of a p-group, Ω(G) and ℧(G)
6. In statistics, it is used as the symbol for the sample space, or total set of possible outcomes.
7. In number theory, Ω(n) is the number of prime divisors of n.
8. in notation related to Big O notation to describe the asymptotic behavior of functions.
9. Chaitin's constant.
Other
1. The symbol of the resistance movement against the Vietnam-era draft
2. Year or date of death
3. Used to refer to the lowest-ranked wolf in a pack
4. Eschatology the symbol for the end of everything
5. In molecular biology, the symbol is used as shorthand to signify a genetic construct introduced by a two-point crossover
1. For ohm – SI unit of electrical resistance; formerly also used upside down (℧) to represent mho, the old name for the inverse of an ohm (now siemens with symbol S) used for electrical conductance. Unicode has a separate code point for the ohm sign (U+2126, Ω), but it is only included for backwards compatibility and the Greek uppercase omega character (U+03A9, Ω) is preferred.[5]
2. In statistical mechanics Ω refers to the multiplicity (number of microstates) in a system.
3. The solid angle or the rate of precession in a gyroscope.
4. In particle physics to represent the Omega baryons.
5. In astronomy (cosmology) Ω refers to the density of the universe, also called the density parameter.
6. In astronomy (orbital mechanics), Ω refers to the longitude of the ascending node of an orbit
In mathematics and computer science:
1. In complex analysis, the Omega constant, a solution of Lambert's W function
2. A variable for a 2-dimensional region in calculus, usually corresponding to the domain of a double integral.
3. In topos theory, the (codomain of the) subobject classifier of an elementary topos.
4. In combinatory logic, the looping combinator, (λ x. x x) (λ x. x x)
5. In group theory, the omega and agemo subgroups of a p-group, Ω(G) and ℧(G)
6. In statistics, it is used as the symbol for the sample space, or total set of possible outcomes.
7. In number theory, Ω(n) is the number of prime divisors of n.
8. in notation related to Big O notation to describe the asymptotic behavior of functions.
9. Chaitin's constant.
Other
1. The symbol of the resistance movement against the Vietnam-era draft
2. Year or date of death
3. Used to refer to the lowest-ranked wolf in a pack
4. Eschatology the symbol for the end of everything
5. In molecular biology, the symbol is used as shorthand to signify a genetic construct introduced by a two-point crossover
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