Pinned toot

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!

@petrilaarne I think just "homorphism" would be even worse

Do you love maths magazines and sides of octagons? Then you'll love our 8th issue! http://chalkdustmagazine.com/

Any others here who like studying maths but *not* any of the sciences?

May seem weirdly paradoxical given that many sciences require some good grasp of maths to strengthen their models and more precisely describe phenomena, but I couldn't keep up in pre-uni school that well (I've done physics, chemistry, biology). Not sure why. Something might have stopped me from properly retaining the extra non-mathematical systems in my head. 🤷♂️

Issue 08 of Chalkdust is coming out on 19 October. Why don't you come along to our launch party? http://chalkdustmagazine.com/blog/chalkdust-issue-08-coming-19-october/

- a microSD card weighs somewhere around 0.4g

- the highest capacity microSD that's easily available is 256GB

- a trebuchet can throw a 90kg projectile over 300m

90kg worth of microSD cards is 225,000 of them

Therefore a trebuchet can throw 57.6PB of data over 300m

This would have the highest throughput of any telecommunications network ever created

Worried about the dominance of big instances? No, really, this is quite natural.

As an emergent and self-governing system, it could be expected that the size distribution of #Mastodon instances roughly follows Zipf's law.

Does it?

At first you see the top 6 instances, and then the rest. But on a log-log scale the size distribution is close to a straight line, which would be expected from an emergent system.

1/

stupid source control pun Show more

Astonishing follow-up - she donates her prize!

Fantastic news! Jocelyn Bell-Burnell has won a $3MM prize!

Brilliant!!

It turns out my freshman year in #maths was equivalent to 11 centimetres of paper. (I used ebooks for statistics.)

@andrewt From Gareth McCaughan.

The average number of ways to express numbers from 1 to N

as sums of two squares

=

(total number of ways to express numbers from 1 to N as \(X^2+Y^2\) )/N

=

(total number of (x,y) for which \( 0 < x^2+y^2<=N \) )/N

=

(total number of (x,y) inside the circle

\( X^2+Y^2=N \), minus 1)/N

=

(area inside the circle \( X^2+Y^2=N\) + O(N) ) /N

=

(area inside the circle \( X^2+Y^2=\sqrt{N}^2 \), +O(N)) /N

= \( \pi\sqrt{N}^2+O(N))/N \)

= \( \pi+O(1/N) \)

Just finished Jordan Ellenberg's #book How Not to Be Wrong. Good mix of #maths theory + rhetoric, touches on some hot issues, and imparts several important moral lessons.

A little spoilery: the book indeed suggests ways to not be wrong using mathematical lenses, but cleverly doesn't promise "ways to be right" 😉

@JordiGH In fact it's based on a lovely result from the 1930's, way before the probability arguments become common in combinatorics.

CC: @petrilaarne

I quite liked @ColinTheMathmo’s entry to #BigMathOff: a simple, initially counterintuitive result that becomes intuitively obvious after a quick think! I wonder how many totally different ways there are to prove it.

If you haven’t yet, go read about it and beautiful Penrose tilings: http://aperiodical.com/2018/07/the-big-internet-math-off-round-1-edmund-harriss-v-colin-wright/

- Location
- Helsinki, Finland

- Languages
- Finnish, English, Swedish, French

- More languages
- C#, C++, Rust, x64 Assembly, more

Maths BSc student at University of Helsinki. Hobbyist computer scientist. Blogs maths in Finnish at www.nollakohta.fi. He/him or anything gender-neutral.

Joined Nov 2017