question 1: if f is a countably additive set function (probability measure) defined on σ-algebra A of subsets of S, then which of the probability space "(f, A, S) is called events?(adsbygoogle = window.adsbygoogle || []).push({});

question 2: define what we mean by algebra and σ-algebra? for this question in the second part do we have to write the definition & properties part of http://en.wikipedia.org/wiki/Sigma-algebra#Definition_and_properties or something else?

Plus, can anyone please help me that what is countably additive?

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# Measure theory - Help

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