Metta World Peace

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121 Questions

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9	How to show that topological groups are automatically hausdorff?
8	Is ${}^{}\mathbb{Q}={}^{}\mathbb{R}$?
6	Is the cardinality of uncountable $G_{\delta}$ set of $\mathbb{R}$ equals the cardinality of the continuum?
6	Does Cauchy sequence of disjoint and closed subsets converge to a non-empty set in a Banach space?
6	Show that an elementary equivalent structure of $\mathbb{R}$ and definable from points is Dedekind complete

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1,858 Reputation

+5	How to show that $f : {}^\ast \Bbb R \to {}^\ast \Bbb R$ is bounded, if it obtains a limited value everywhere?
+10	Is there an element in $^* \Bbb N$ is Dedekind-infinite?
+15	Is it possible that the union of a Bernstein set and a singleton isn't a Bernstein set?
+5	Can't that every standard positive real number is limited be proved?

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10 Answers

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4	A question on $\omega$
2	The cofinality of $\aleph_{\omega\cdot9+3}$
1	Game Theory Question about Financial Markets
1	What's application of Bernstein Set?
1	common knowledge and concept of coarsening partition

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53 Tags

5 elementary-set-theory × 17	1 general-topology × 18
2 set-theory × 24	1 descriptive-set-theory × 14
2 game-theory × 15	1 real-analysis × 2
2 cardinals × 13	1 partitions
1 logic × 25	0 nonstandard-analysis × 9

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$Mathematics Stack Exchange$	Mathematics	1,858 rep	2318
	Skeptics	287 rep	112
	Area 51	151 rep	2
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