Kamal

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154 reputation

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16 Questions

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8	Finding the smallest integer $n$ such that $1+1/2+1/3+…+1/n≥9$?
7	Fundamental group of the Klein bottle, using action of a group?
4	If $R_2$ is an $R_1$-algebra, then is $R_2 \otimes_{R_1} M$ an $R_2$-module?
3	The relation between betti numbers and Tor functor?
2	If the action of a group $G$ on $\mathbb{R}$ is properly discontinuous then G is isomorph to $\mathbb{Z}$?

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154 Reputation

+40	Finding the smallest integer $n$ such that $1+1/2+1/3+…+1/n≥9$?
+35	Fundamental group of the Klein bottle, using action of a group?
+10	If the action of a group $G$ on $\mathbb{R}$ is properly discontinuous then G is isomorph to $\mathbb{Z}$?
+5	question about direct sum and direct product in Graded Modules?

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21 Tags

0 algebraic-topology × 4	0 cryptography × 2
0 topological-groups × 3	0 homological-algebra × 2
0 general-topology × 3	0 cohomology × 2
0 graded-modules × 2	0 commutative-algebra
0 elementary-number-theory × 2	0 abstract-algebra

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$Mathematics Stack Exchange$	Mathematics	154 rep	5
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$TeX - LaTeX Stack Exchange$	TeX - LaTeX	1 rep
	Programmers	1 rep

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