order theory related issues & queries in MathXchanger



When is the set H={g^2|g∈G} a subgroup of G?

group-theory
Updated September 21, 2018 12:20 PM



















mathematical induction and perfect square

number-theory
Updated September 21, 2018 06:20 AM

Are these two sets $\sigma$-algebras?

measure-theory
Updated September 21, 2018 05:20 AM




Example of algebra which is not σ-algebra.

measure-theory
Updated September 21, 2018 04:20 AM








Condition of being a measure

analysis measure-theory
Updated September 21, 2018 00:20 AM

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