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Eric earned this badge 17 times |
feb 4 at 11:15
When log is written without a base, is the equation normally referring to log base 10 or natural log?
jan 9 at 5:21
Is it possible $n(n+1)(n+2)…(n+k)$ is a square?
jan 6 at 6:00
How to show $\lim_{n \to \infty} a_n = \frac{ [x] + [2x] + [3x] + \dotsb + [nx] }{n^2} = x/2$?
dec 22 at 17:49
Prove every odd integer is the difference of two squares
dec 19 at 5:28
A pencil approach to find $\sum \limits_{i=1}^{69} \sqrt{\left( 1+\frac{1}{i^2}+\frac{1}{(i+1)^2}\right)}$
dec 6 at 22:49
Importance of rigor
may 14 '12 at 5:17
How to effectively and efficiently learn mathematics
apr 29 '12 at 18:02
What is so interesting about the zeroes of the $\zeta$ function
apr 24 '12 at 15:40
Direct Proof that $1 + 3 + 5 + \cdots+ (2n - 1) = n\cdot n$
mar 19 '12 at 20:41
Prove $2^{1/3}$ is irrational.
jan 26 '12 at 21:09
100 Soldiers riddle
jan 26 '12 at 19:14
What is special about the numbers 9801, 998001, 99980001 ..?
jan 19 '12 at 20:09
if $m^2 = a^3 - b^3$, then $m$ is the sum of two squares.
sep 16 '11 at 19:05
If G is not commutative, then is there always a subgroup that is not a normal subgroup?
aug 26 '11 at 13:32
Proof of 1=0 by mathematical induction?
aug 25 '11 at 20:45
Show that $A_n=\sum\limits_{k=1}^n \sin k $ is bounded?
apr 24 '11 at 5:09
$\int_{-\infty}^{+\infty} e^{-x^2} dx$ with complex analysis
