Robin Hoode

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4 Questions

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3	Is it true that for all proofs of the statement, $\forall x \exists y : R(x, y)$, then we can say $y = y(x)$? (Example given)
2	Are there broad or powerful theorems of rings that do not involve the familiar numerical operations (+) and (*) in some fundamental way?
2	An efficient method for computing the number of submultisets of size n, of a given multiset
2	Introduction to proofs with a fair amount of hand-holding?

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2 Answers

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2	How can I determine the cardinality of a set of polymorphic functions?
1	Permutations with identical items

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2 computer-science	0 soft-question × 3
2 set-theory	0 real-analysis
2 lambda-calculus	0 logic
2 functions	0 group-theory
1 combinatorics × 2	0 ring-theory

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