Allison Cameron

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44 Questions

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12	Prove that this is a group
9	Show that the set of all finite subsets of $\mathbb{N}$ is countable.
5	How to determine the image of a set?
5	Prove that $\frac{n^n}{3^n} < n! < \frac{n^n}{2^n} \forall n \geq 6 $
4	question about bases of a given topology

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583 Reputation

+5	Please explain the product of two ideals?
+10	Path-connectedness and compactifications
+25	How to determine the image of a set?
+5	Prove that an open ball is also closed in an ultrametric space

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3 Answers

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2	Fast(est) and intuitive ways to look at matrix multiplication?
1	Let $a,b,c>0$ and $a+b+c= 1$, how to prove the inequality $\frac{\sqrt{a}}{1-a}+\frac{\sqrt{b}}{1-b}+\frac{\sqrt{c}}{1-c}\geq \frac{3\sqrt{3}}{2}$?
-1	Congruences, elementary number theory

22 Tags

2 linear-algebra	0 general-topology × 11
2 matrices	0 real-analysis × 6
1 inequality × 4	0 group-theory × 4
0 abstract-algebra × 16	0 elementary-set-theory × 2
0 homework × 13	0 analysis × 2

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