Timeline for Examples of interesting false proofs
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 1, 2019 at 22:16 | comment | added | Zach Teitler | Reminds me of mathoverflow.net/a/81360/88133. | |
| May 19, 2012 at 18:28 | comment | added | John Engbers | True story that I witnessed in a US precalculus class: the teacher told the class that $\pi$ was a rational number, since $\pi = C/d$, where $C$ is the circumference of a circle and $d$ is the diameter. Since $\pi$ can be written as a fraction, it is rational. This still makes me cringe to this day. | |
| Apr 30, 2012 at 20:19 | history | answered | Feldmann Denis | CC BY-SA 3.0 |