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10 Answers

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6	Is the class of cardinals totally ordered?
4	Why is the set of primitive recursive functions well defined?
3	Continuous function $f$ such that $X^n f$ is of the class $C^n$
2	Which kind product of non-zero number non-zero cardinal numbers yields zero?
2	Can't write context free grammar for language $L=\{a^n\#a^{n+2m}, n,m \geq 1\}$

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2 Questions

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5	Is there a totally asymmetric 2P $0$-sum game with all payoffs $\pm1$, with a unique Nash eq. which assigns positive probability to each strategy?
4	Which functions satisfy $\forall n,x,y (x \equiv y \pmod n \implies f(x) \equiv f(y) \pmod n )$?

20 Tags

8 cardinals × 2	3 real-analysis × 2
7 set-theory × 2	3 analysis
6 ordinals	2 axiom-of-choice
5 logic × 2	2 complex-numbers
4 computability	2 elementary-set-theory

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