There are many amazing things to see in this image, the one that jumps out at me is that you can see the atmosphere as a thin ring around the earth. The aurora show that it isn't an artefact.

That's where we live. It looks so fragile.

We should probably take care of it.

e. The working language will be English. At research level, it is rare for there to be a seminar with only Norwegians present and once there's overseas people there, everyone switches to English.
f. The exception is the lunch room. Best plan for that is to use it as a place for learning Norwegian.

c. Everyone understands Danish. And Swedish. The cultures of those three have been cross-polinating for centuries so are mutually comprehensible (but distinct!).
d. The local dialect, trøndersk, is quite thick. But most will moderate it to the Oslo dialect, which is what is taught to foreigners.

a. Everyone speaks English. I mean, *everyone*.
b. Norway makes the distinction between written language and spoken. Bokmål and Nynorsk are *written*, not spoken. Bokmål is almost the same as Danish, so your existing Danish will help a lot there and doesn't depend on pronunciation.

Go for it. You're there for the maths, not the language.

That said, of course you should get to know the place when you're there and part of that is learning the language (Depending on the length of the post-doc, there may or may not be a language requirement).

Then it's useful to know:

And there's always this for more intricate hands:

loopspace.mathforge.org/CountingOnMy...

The jokes on them, then, as there is a valid approach to calculus that takes 'dx' literally and where dy/dx is actually a fraction.

This is important: it's easy to fall into this trap, but you're right that we should be better than that.

We're always going to lie to our students, even at university. The important thing is to be honest with our lies and tell the students that it's a "works for now" thing.

For that one, I ask the students to check that no-one's in the corridor before I tell them that you can treat dy/dx as if it were a fraction, just so no other Maths teacher sees me!

As in, what I'm really trying to do is signal very strongly that "this is a lie, but it's a very useful one"

Something fishy going on here. The article claims this is based on British data, and yet "not bad" isn't the most positive response!

Added to the site

notes.mathforge.org/notes/publis...

I'm going to campaign for "angle in a quarter circle" to be added to the list of official circle theorems.

The two shapes that make up the design are a quarter circle and a semicircle. The blue angles are the two marked with solidly coloured sectors. The orange angle is the one marked with an arc and a question mark.

The two blue angles are equal. What’s the size of the orange angle?

Exercise?

Is your LaTeX distribution up to date?

If you use TeXLive, it needs to be 2025.

experts to converse. So always pedantically insisting on "correct" terminology is not necessarily sound pedagogy.

¹Indeed, as one of the originators of the term "Tall-Wraith monoid", I'd be a complete hypocrite if I were to complain about your choices.

I am referring to that, and my post was not intended as a criticism of your choice¹ but just that it illustrates a point I've been recently trying to make, which is that mathematical terminology and notation is *not* intended to ease novices into the discipline, but rather to make it easier for

Remind me again about how mathematical terminology was designed to make things easier to learn.

Oh, wait. No it wasn't.

#UKMathsChat #ITeachMaths #mathsky

PS I have nothing to say about the suitability of this terminology for insiders. It may be perfectly on point. But that's not my point here.

Very jealous!

My closest is probably @blackwells.bsky.social where I love to spend a couple of years in an afternoon in the Norrington Road, but it's just a bit beyond walking distance from where I live.

I miss being able to walk to a bookshop.

Controversial statement: the 'reverse chain rule' or inspection are integration by substitution in your head. I don't teach it, but many end up using it as their substitution gets strong enough. Like for factorising to solve quadratics, if you haven't spotted it in 60 seconds, just use the formula.

It's all about the white mice for me ...

#MathsConf40 is on Saturday 18th April

completemaths.com/community/ma...

I do love a chance to #NetworkLearnShare (as well as a Raffle/TuckShop)

Who’s going? Who needs to get a ticket? @mathforge.org @sheena2907.bsky.social @catrionaagg.bsky.social @lasalleed.bsky.social @mrmattock.bsky.social

What bothers me most is how little time there is between me now and me being of a suitable age to buy this¹

¹not that I could buy it, just that I'd be old enough

Poster: Beach Spectres, we want to make the largest aperiodic tiling ever! What's an aperiodic tiling? It's when you cover a flat surface with copies of a shape like the one above, without any repeating patterns. The Spectre monotile was only discovered in 2023, and mathematicians are really excited about it! What are you doing? We're going to use large “cookie cutter” tools in the shape of the Spectre to cover the beach with the aperiodic tiling. You can help: come to the beach and we'll show you what to do. Where and when? Whitley Bay beach, 7th June 2026. Come and join in, just watch, or talk to some very enthusiastic mathematicians! beachspectres.com

I'm enormously happy to finally be able to announce the date of the #BeachSpectres project: 7th June, 2026. #WhitleyBay beach, UK.

If you can make it to the beach and join in with the tiling effort, I'll be very happy to see you and glad of the help!

Lots […]

[Original post on mathstodon.xyz]

Apart from the n/4 and 3n/4 bit, that is ...

UK-based answer - I feel this depends on the geometry of the parking lot.

The gap between rows can be tight, meaning that getting in and out requires turning while part of the vehicle is in space. This is much easier if the moveable part (ie the front wheels) is out of the space.

#SCOvIRE clearly the tactic is for both teams to get 4 tries as quickly as possible.

Then there will be a series of kickable but tricky penalties, alternating, until one team misses, after which that team will gracefully surrender and allow the other team to rack up a huge points difference.

I'm still struggling to place the 1 ...