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Petri Laarne @petrilaarne@mathstodon.xyz

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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!

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Just finished Jordan Ellenberg's How Not to Be Wrong. Good mix of 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" 😉

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@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 : 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: aperiodical.com/2018/07/the-bi

I’m amazed that I managed full six weeks before messing up my repository at work.

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So, how many of you call the # symbol the hashtag in all contexts, like you would call . period or dot or you @ the at?

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I'm running a four-round instant knock-out tournament throughout the month of July to basically squeeze a load of fun maths out of my friends. Let's see if we can make it all come together! Voting starts on the 1st of July.
aperiodical.com/2018/06/announ

I’ve now updated the original post with a solution. Hoping that we found the same one!

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being an applied mathematician means praying to every religious figure that your code converges

Correction: 18D should read ”Each digit is the last digit of twice the preceding digit”. Thanks @christianp for spotting this! (And very ace to solve a puzzle with an error in it 😎)

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Protip:

When designing a user interface, imagine some old woman using it, say Margaret Hamilton, and she's clicking your app's buttons and saying to you, as old people do,

"Young whippersnapper, when I was your age, I sent 24 people to the ACTUAL MOON with my software in 4K of RAM and here I am clicking your button and it takes ten seconds to load a 50 megabyte video ad and then it crashes

I'm not even ANGRY with you, I'm just disappointed."

If you fancy a bit bigger but not too difficult , I just published a on my blog! I promise it’s much easier than the Magazine one.

nollakohta.fi/2018/05/kesa-luk

It is also very humbling to work in a team of so many PhD’s. My interpretation of ”fun algorithm work” is pretty lame compared to what they do! Still, very encouraging to see how much I already can do.

I guess I should mention that I started a couple weeks ago as a summer intern at , working on dose planning software. That’s very exciting, especially as barely a BSc student! Can’t comment on specifics, but doing fun algorithm work, applying for good.

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math puzzle, link Show more

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"Remember! Most strings are incompressible, most reals uncomputable, most theorems unprovable, most programs undecidable."

― Gwern

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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!

Things you can do in : attend the grand opening of grazing season at the university research farm! 🐄🐄 (I’m not sure whether this is ridiculous or amazing for a capital city.)

Re today’s (xkcd.com/1989/), my compromise between ”lay-tecks” and ”lah-tekh” is ”late ex”. *ducks*

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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: somethingorotherwhatever.com/s
A little write-up on @aperiodical at aperiodical.com/2018/05/the-in