Hi! I'm a maths student at Helsinki University. For the past year or so I've been writing a popular (not as in visitors) maths blog, www.nollakohta.fi, in Finnish. In addition to human languages (FIN/ENG/SWE/FRE) I respond to quite a few computer ones (esp. C#).
Interested in seeing if toots > tweets!
math puzzle, link Show more
Here's a nice description by Math3ma of the Assassin Puzzle as described by Mirzakhani, and a solution for the square case: http://www.math3ma.com/mathema/2018/5/17/is-the-square-a-secure-polygon . I had a lot of fun today trying to work it out for myself, then trying to check it for an equilateral triangle, then for a regular hexagon. The equilateral triangle seems to be pretty well-behaved, but the hexagon has been very interesting, and I haven't quite worked out whether it's secure, yet. :)
"Remember! Most strings are incompressible, most reals uncomputable, most theorems unprovable, most programs undecidable."
to comply with GDPR, as of May 25th, I will no longer be remembering anybody’s name, face or personal details without their explicit consent
...phew, finally a viable excuse
Just had the last exam of the year, and the sky’s not too bad either. I approve!
Recently I discovered a surprising fact about numbers, so I made an online web thing to give it the recognition it deserves. Give it a go: http://somethingorotherwhatever.com/sum-of-3-palindromes/
A little write-up on @aperiodical at http://aperiodical.com/2018/05/the-incredible-palindromic-hat-trick/
Joys of maths freshman life: spending half an hour calculating the area of a triangle.
(AKA: Riemann sums are not at all error-resilient)
I really liked the 30-ish profiles of research mathematicians in the latest AMS Notices (pdf): http://www.ams.org/journals/notices/201803/rnoti-p248.pdf
Mistä tiedämme, että π = 3,14159265...? Piin loputtomat desimaalit: http://www.nollakohta.fi/2018/02/piin-loputtomat-desimaalit.html
Although I long ago dropped out of research #mathematics, I really love asking working mathematicians to explain whatever it is they are interested in. I have enough general knowledge that they can usually simplify things enough for me to get the gist of their work. Plus, they're usually really enthusiastic about explaining what they do, because most strangers they meet cannot or will not follow!
Great fun to see them light up and have them tell me the metaphors they've developed for their art.
Miksei nollalla saa jakaa? http://www.nollakohta.fi/2018/02/miksei-nollalla-saa-jakaa.html
Fermi estimate: How many snowflakes in a snowman? Show more
I reckon some tens of millions, up to 100 million. If you know Finnish, the derivation is here: http://www.nollakohta.fi/2018/01/kuinka-monta-lumihiutaletta-lumiukossa.html
Veikkaus uudisti sääntöjä jälleen, joten taas mennään... Kannattaako Lotto plussata? http://www.nollakohta.fi/2018/01/kannattaako-lotto-plussata.html
Kuinka Bayesin kaava pelastaa noutajan, tutkijan ja siinä sivussa maailman http://www.nollakohta.fi/2018/01/kuinka-bayesin-kaava-pelastaa-noutajan.html