Tharsis

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855 reputation

112

bio	website	toolserver.org/~geohack/…
	location	Stockholm, Sweden
	age
visits	member for	5 months
	seen	8 mins ago
stats	profile views	123

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855 Reputation

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-255

May 12

+10	03:01	2 events	Natural extension of the divisor function $\sigma$ to the complex integers $\mathbb{Z}[i]$
-265	00:12	removed	User was removed

55

May 11

+25	14:11	2 events	How to derive $\cos\frac{n\pi}{3}=\frac{1+3(-1)^{[\frac{n+1}{3}]}}{4}$
+15	17:18	3 events	Natural extension of the divisor function $\sigma$ to the complex integers $\mathbb{Z}[i]$
+15	09:50	accept	an odd perfect number cannot be a prime number or a product of two prime numbers or power of prime number.

175

May 9

+55	18:14	5 events	Last 2 numbers of the product of divisors
+50	17:18	bounty	Proving that every $2\times 2$ matrix $A$ with $A^2 = -I$ is similar to a given matrix
+30	14:55	3 events	Finding normalised eigenvectors…
+20	12:11	2 events	Determinant problem
+10	17:07	upvote	How to derive $\cos\frac{n\pi}{3}=\frac{1+3(-1)^{[\frac{n+1}{3}]}}{4}$
+2	19:12	edit	$X∈M_{m×1}(F)$ and $Y∈M_{1×n}(F)$: A Range Dimension Implication
+2	18:59	edit	What is $57^{46}$ divided by 17?
+2	15:35	edit	Summation of independent discrete random variables?
+2	13:12	edit	How do you calculate the modulo of a really high number with a large power, with a really high mod number?
+2	11:39	edit	A matrix satisfying $AB-BA=B$

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