Andylang

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358 reputation

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	seen	May 16 at 4:44
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A starter of all science subjects.

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15 Questions

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6	How to prove that the Frobenius homomorphism is surjective?
5	How to prove $1$,$\sqrt{2},\sqrt{3}$ and $\sqrt{6}$ are linearly independent over $Q$?
4	Why are $l^{\infty}$ and $L^{\infty}$ non separable spaces?
4	How to prove this equality $ t(1-t)^{-1}=\sum_{k\geq0} 2^k t^{2^k}(1+t^{2^k})^{-1}$?
4	Greatest Common Divisor of Several Integers

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358 Reputation

+5	What is the relation between graded modules and finitely generated modules
+10	what is the square root of $-4$?
+5	Change of base rings for exterior algebra
+5	Anti-derivation of an exterior algebra

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2 Answers

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2	How do we prove $\cos(\pi/5) - \cos(2\pi/5) = 0.5$ ?.
2	what is the square root of $-4$?

19 Tags

2 complex-numbers	0 combinatorics × 4
2 trigonometry	0 homological-algebra × 4
0 abstract-algebra × 11	0 automata × 3
0 homework × 5	0 modules × 2
0 semigroups × 4	0 exterior-algebra × 2

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3 Accounts

$Mathematics Stack Exchange$	Mathematics	358 rep	110
	English Language & Usage	101 rep
	Programmers	101 rep

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