it is what you call someone when someone does something very gigachad-like
Person 1: *Does something that a chad would do*
Person 2: Person 1 is a gigma sigma
by tehfunnyman October 19, 2023
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a phrase used by OOKAMI when he throws a rock at genji and it doesnt cc him or ki11 him ''GenJi IS So OveR PowEReD''
OOKAMI STFU AND RESPECT GENJI U TRASHCAN BTW SIGMA IS A TRASH CAN AKA SIGMA TRASH
by MAKTOUM_BANKIA September 27, 2020
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Lachlan cool guy sigma will stand for the flag and kneel for the cross

Lmao
Did you see Lachlan cool guy sigma
No, I just broke my legs from jumping from a plane car lmao
by JoshuaNetfold May 2, 2022
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Sigma-algebro or σ-algebro is a bro who studies probability and measure theory, as σ-algebra is one of the first things they learn in the field.
Case 1
Bro A: Josh is pulling all the girls, no wonder because he's smart and handsome and works as a quant
Bro B: Yeah Josh is a σ-algebro

Case 2
Sam had nightmares about σ-algebra during his PhD, and dropped out of school, he's failed to be a sigma-algebro
by dapula_burger August 15, 2023
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The Sigma paradox happens with thirds mainly e.g 1/3 = 33.333 repeating 2/3 = 66.666 repeating and 3/3 = 99.999 repeating. 3/3 is q whole number equaling 1 however it can't equal 1 because it is 99.9 repeating get it? It comes ever closer too 100% but will never get there. You can relate, in sure.
Bruh. Your life is pretty much a Sigma Paradox!
What?
You will NEVER SUCCEED ;)
by pseudonym1583622891 January 21, 2016
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A “sigma” person is a person who is usually racist, misogynistic and can’t stand the lgbt or furry community, usually by making fun and or generally bullying a member of a certain community, and then having others justify their actions by calling them a “sigma”, not to be confused with actual sigma individuals that actually have respect for peoples feelings.

(Not a rant post)
Person 1: “go kys furry, you probably touch animals”

Person 2: “bro you are so “sigma” !”
by Potatoboye June 6, 2023
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A sigma algebra (or σ-algebra) is to set algebras what sigma males are to males. The Borel hierarchy (the analog of the male hierarchy) is not a σ-algebra at any countable rank; instead the σ-algebra has the largest possible rank -- ω_1, the least uncountable ordinal (under suitable conditions e.g. the Polish space is uncountable. This is known as the non-collapse of the Borel hierarchy).

A σ-algebra is closed under countable union, countable intersection, and relative complement. This means σ-algebras arise naturally in the study of measure theory, where the measurable sets form a σ-algebra.
The algebra of Lebesgue-measurable subsets of R (i.e. the sets of real numbers with a well-defined "length", which is possibly infinity) form a sigma algebra.
by sigma_algebra_grindset June 5, 2022
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