New math post on my blog: What's the difference between 0/0 and 1/0? https://blog.plover.com/math/division-by-zero.html

I was momentarily excited to discover that János Pach has a blog! But then I saw that it has only one nontrivial post, from 2010. https://pachjanos.wordpress.com/

In which I complain about mathematical jargon and identify some candidates for the worst example. https://blog.plover.com/lang/math-jargon-failures.html

New math post on my blog: Sometimes it matters how you get there https://blog.plover.com/math/sometimes-it-matters-how-you-get-there.html

Generating 4d polyhedra from their symmetries: https://syntopia.github.io/Polytopia/polytopes.html

By Mikael Hvidtfeldt Christensen, via a year-old post on newly-defunct Google+: https://web.archive.org/web/20190306075446/https://plus.google.com/+RoiceNelson/posts/13EEovjAjh3

The set of real and pure imaginary numbers is analogous to the set of even and odd functions $\Bbb R→ \Bbb R$. https://math.stackexchange.com/q/3178678/25554

New math post on my blog: More about the happy numeric coincidence https://blog.plover.com/math/power-digit-sum-2.html

I spent some time today thinking about how long it would take me to produce a table of sines and cosines by hand. Of course it depends on the density and the precision of the table, but my conclusion was that it wouldn't take excessively long. I'd start by calculating sin 1° using the Maclaurin series, then use angle addition formulas to work up to 2°, 4°, , etc, to 90°.

New math post on my blog: A happy numeric coincidence https://blog.plover.com/math/power-digit-sum.html

- Good blog
- https://blog.plover.com/

- Crappy blog
- https://shitpost.plover.com/

- Totemic animal spirit
- Octopus

I am an amateur mathematician, but not the angle-trisecting kind.

Joined May 2017