New posts in pi

First order definition of $\pi$

first-order-logic pi

(UPDATED) Why didn't Archimedes further approximate $\pi$ this way (or did he)?

pi

Why is $\pi r^2$ the surface of a circle

circles surfaces pi

Rational series representation of $e^\pi$

sequences-and-series exponential-function approximation closed-form pi

A Neat Identity Involving Zeta Zeroes

calculus summation riemann-zeta pi riemann-hypothesis

Is this $2020$ holiday formula correct? $\pi\left( \dfrac{\left( \pi!\right)!-\lceil \pi \rceil \pi! }{{\pi}^{\sqrt \pi}-\pi!}\right)=2020$

calculus numerical-methods gamma-function solution-verification pi

Proof that $\frac{2}{3} < \log(2) < \frac{7}{10}$

inequality logarithms approximation alternative-proof pi

How to prove $\sum\limits_{n=1}^\infty\frac{\sin(n)}n=\frac{\pi-1}2$ using only real numbers.

real-analysis sequences-and-series alternative-proof pi

Decimal Expansion of Pi

pi decimal-expansion

Definition of $\pi$, $\lim\limits_{n \to \infty}{n \sin\left(\frac{180^o}{n}\right)}$

calculus sequences-and-series limits pi

Consecutively Adding Sines

pi trigonometric-series

Why do we need an integral to prove that $\frac{22}{7} > \pi$?

approximation pi

I found a new way of calculating pi,is that a great deal? [closed]

geometry circles pi

Relationship between Catalan's constant and $\pi$

integration sequences-and-series pi constants catalans-constant

Is the arc length always irrational between two rational points?

calculus irrational-numbers pi arc-length

Why $e^{\pi}-\pi \approx 20$, and $e^{2\pi}-24 \approx 2^9$?

power-series approximation pi laurent-series q-series

Why is it so difficult to determine whether or not $\Large \pi^{\pi^{\pi^\pi}}$ is an integer?

pi

Proving $\pi=(27S-36)/(8\sqrt{3})$, where $S=\sum_{n=0}^\infty\frac{\left(\left\lfloor\frac{n}{2}\right\rfloor!\right)^2}{n!}$ [closed]

calculus sequences-and-series summation power-series pi

$ \left\lfloor 10^{\lfloor n \rfloor} \pi \bmod 10 \right\rfloor $ - does this function give the nth decimal place of pi?

modular-arithmetic ceiling-and-floor-functions pi rounding-error desmos

Happy $\pi$-day! Is it true that $\sum_{p \;\text{prime} } \frac{1}{{\pi}^p} < \pi -\lfloor \pi \rfloor$?

real-analysis calculus sequences-and-series approximation pi