Mathematics

Mathematics, 14.09.2019 02:30, jetblackcap

If t is a collection of subsets of a set x show that there is a unique smallest (i. e. coarsest) topology on x containing t.

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Mathematics, 29.09.2019 03:30, ladypink94

Suppose that f : x → y is a function and that a is a σ-algebra of subsets of x. show that the following collection of subsets of y is also a σ-algebra: b : = {b ⊂ y : f −1 (b) ∈ a}

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If t is a collection of subsets of a set x show that there is a unique smallest (i. e. coarsest) top...

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