$\pi^4+\pi^5 < e^6 $
130078
How can one prove that $\pi^4 + \pi^5 < e^6$?
46814
$ a+b+c+d=6 , a^2+b^2+c^2+d^2=12$ $\implies$ $ 36 \leq 4(a^3+b^3+c^3+d^3)-(a^4+b^4+c^4+d^4) \leq48 $
98443
Find positive integers such that $2n^3 + 5|n^4 +n+1$
139411
Finding $\pi$ factorial
115733
Proving that $\sec\frac{\pi}{11}\sec\frac{2\pi}{11}\sec\frac{3\pi}{11}\sec\frac{4\pi}{11}\sec\frac{5\pi}{11}=32$
114793
Prove that $\sqrt{10} - \sqrt6 - \sqrt5 + \sqrt3$ is irrational
100907
$\sin\alpha + \sin\beta + \sin\gamma = 4\cos{\frac{\alpha}{2}}\cos{\frac{\beta}{2}}\cos{\frac{\gamma}{2}}$ when $\alpha + \beta + \gamma = \pi$
158627
$e^{\left(\pi^{(e^\pi)}\right)}\;$ or $\;\pi^{\left(e^{(\pi^e)}\right)}$. Which one is greater than the other?
154900
Why is $\pi$ = 3.14... instead of 6.28...?
61794
Interesting and unexpected applications of $\pi$
128098
Decimal Expansion of Pi
83290
How is the value of $\pi$ ( Pi ) actually calculated?
134633
How to sum this series for $\pi/2$ directly?
34017
Show that $n^{\pi\left(2n\right)-\pi\left(n\right)}2$
109295
Proving $1-\exp(-4x^2/ \pi) \ge \text{erf}(x)^2$
132115
Verify my proof of the irrationality of $\sqrt{6}$.
105679
Can $\pi$ or $e$ be a root of a polynomial with algebraic coefficients?