Mathematics
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user161005

Mathematical autodidact. Mathematical background: Russian school course of mathematics (including calculus), predicate logic, linear algebra, graph theory, set theory, statistics, combinatorics and probability. I'm very far from knowing it all by heart and rusty in some places.

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6 Is there conflict between the law of excluded middle and “no set is its own member”? Sep 16 '18
5 How to find the indefinite integral of sin(sin(x))dx? May 15 '18
4 Is the word “empty” in set theory different from the word “empty” in ordinary language? [duplicate] Sep 10 '18
3 How can we construct rectangle with non-zero area when all its lines have zero area? Sep 27 '18
3 Proofs that the median and a 50th percentile aren't always the same thing. Is my reasoning correct? May 30 '19
3 Proof that 1-P(B|C)=P(~B|C). Is everything correct? Jun 5 '19
2 How can we calculate what die has discrete distribution that is further from the uniform discrete distribution? Jun 9 '19
2 Proofs that impossible event B has NO conditional probability $\mathbb{P}(A|B)$. Is everything correct? Jun 4 '19
2 How to explain/model P(A), for an UNFAIR die, with set theory? Jul 1 '19
2 If ratios like 4:0 and 2:0 are defined, then how can we determine if they are equivalent? Oct 19 '20
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