Badge
| Enlightened | First to answer and accepted with score of 10 or more. This badge can be awarded multiple times. |
Aryabhata earned this badge 40 times |
dec 18 at 17:13
What is the resistance between two points a knights move away on a infinite grid of 1-ohm resistors
aug 18 at 21:48
How to verify new digits of $\pi$?
jun 25 '12 at 18:44
Is a transcendental number necessarily irrational?
apr 22 '12 at 2:44
Prove: $f(t)\leq t+1$
apr 21 '12 at 2:09
Summing an unusual series: $\frac {x} {2!(n-2)!}+\frac {x^{2}} {5!(n-5)!}+\dots +\frac {x^{\frac{n}{3}}} {(n-1)!}$
apr 17 '12 at 15:12
Establishing the inequality at the heart of a popular sequence which converges to powers of $e$
apr 16 '12 at 22:22
Intuitive explanation for a polynomial expansion?
apr 12 '12 at 16:18
Prove or Disprove that $\left|\frac{e^{2i\theta} -2e^{i\theta} - 1}{e^{2i\theta} + 2e^{i\theta} -1}\right| = 1$
mar 29 '12 at 7:45
Pretty solution to question about floor function
mar 26 '12 at 14:24
$\lim_{n \to +\infty} n^{\frac{1}{n}} $
mar 5 '12 at 13:41
Dividing a square with a hole into two
mar 2 '12 at 20:47
Prove: $\frac{n^5}5 + \frac{n^4}2 + \frac{n^3}3 - \frac n {30}$ is an integer for $n \ge 0$
dec 22 '11 at 23:33
Can someone explain this anecdote from Bob Weinstock?
nov 23 '11 at 7:38
Series converges implies $\lim{n a_n} = 0$
sep 16 '11 at 23:15
Simple explanation and examples of the Miller-Rabin Primality Test
sep 15 '11 at 18:58
Integer solutions of $3a^2 - 2a - 1 = n^2$
sep 10 '11 at 8:25
Finding $\lim_{x \to 0}\ \frac{\sin(\cos(x))}{\sec(x)}$
aug 28 '11 at 13:11
How to convert a hexadecimal number to an octal number?
jul 18 '11 at 14:11
Proving $\frac{1}{\sin^{2}\frac{\pi}{14}} + \frac{1}{\sin^{2}\frac{3\pi}{14}} + \frac{1}{\sin^{2}\frac{5\pi}{14}} = 24$
jul 8 '11 at 8:33
Three variable, third degree Diophantine equation
jul 7 '11 at 3:27
Proving $2 ( \cos \frac{4\pi}{19} + \cos \frac{6\pi}{19}+\cos \frac{10\pi}{19} )$ is a root of$ \sqrt{ 4+ \sqrt{ 4 + \sqrt{ 4-x}}}=x$
jul 7 '11 at 3:27
German sofa primes: Can both $q$ and $\frac{q^3+1}{2}$ be prime?
jul 7 '11 at 3:27
What is the image near the essential singularity of z sin(1/z)?
may 30 '11 at 14:21
If $\alpha$ is an acute angle, show that $\displaystyle \int_0^1 \frac{dx}{x^2+2x\cos{\alpha}+1} = \frac{\alpha}{2\sin{\alpha}}.$
feb 28 '11 at 1:07
Is there an elementary proof that $\sum \limits_{k=1}^n \frac1k$ is never an integer?
jan 14 '11 at 5:56
Why is Pi equal to 3.14159…?
dec 28 '10 at 17:03
How do I integrate the following? $\int{\frac{(1+x^{2})\mathrm dx}{(1-x^{2})\sqrt{1+x^{4}}}}$
dec 24 '10 at 8:12
A general formula for $\sum (k-1)(k-2)(k-3)$?
nov 22 '10 at 7:20
Identity involving Euler's totient function: $\sum \limits_{k=1}^n \left\lfloor \frac{n}{k} \right\rfloor \varphi(k) = \frac{n(n+1)}{2}$
nov 19 '10 at 21:10
Taking Seats on a Plane
nov 8 '10 at 17:43
Why Doesn't This Series Converge?
oct 20 '10 at 17:50
Is it possible to get arbitrarily near any acute angle with Pythagorean triangles?
sep 6 '10 at 17:15
Find polynomials such that $(x-16)p(2x)=16(x-1)p(x)$
aug 21 '10 at 4:54
Irrationality of powers of $\pi$
aug 19 '10 at 2:59
Constructing a seven digit number such that one divides the other
