@ColinTheMathmo@mathstodon.xyz avatar

ColinTheMathmo

@ColinTheMathmo@mathstodon.xyz

Fulltime freelance provider of outreach and enhancement in maths ... I talk a lot. About maths.

I talk about other stuff too, like ballroom dancing, juggling, unicycling, education, engineering, software, and "other things".

But mostly about maths.

I tend to follow back, but only if you have something in your profile.

This profile is from a federated server and may be incomplete. Browse more on the original instance.

ColinTheMathmo, to random
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In about half an hour, pass, starting at 22:18:31, duration 361 secs, bright, Magnitude -2.9

ColinTheMathmo, to random
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Some passes of the #ISS visible from the UK overnight - I'll post alerts closer to the time - #UK_ISS

ColinTheMathmo, to random
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Oh. Crap.

ColinTheMathmo, to random
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Radio 3 just referred ... twice ... to Dame Susan Jocelyn Bell Burnell as a man.

Interesting.

ColinTheMathmo, to random
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Desperately sad to learn of the death of Douglas Buchanan after a short illness.

A tireless promoter of maths, an extraordinary teacher, he created brilliant events and reached hundreds of thousands.

A very sad loss.

Very sad.

ColinTheMathmo, to random
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And here's the local announcement!

https://mathstodon.xyz/@chalkdustmag/112473088932056175

ColinTheMathmo, to random
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Quoting from elsewhere ... but it's real !!!

It's here! The day we look forward to more than Christmas, exam results, and the first day of the cricket season put together -- is now live!

Read it for free at http://chalkdustmagazine.com or get your physical copy online or from a Maths department near you!

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

Woo hoo !! My streak is once again extending! Having got to 93 and lost it, I've now made up the ground and I'm on my way again.

748

➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️

https://www.andrewt.net/puzzles/cell-tower/?p=748

Current streak: 94 (Plutonium)

Best streak: 94

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

When someone has trouble in mathematics, we should bolster our support, not lower our expectations. -- Francis Su

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

In about half an hour, #UK_ISS #ISS pass, starting at 23:08:37, duration 253 secs, bright, Magnitude -2.6

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

Some passes of the #ISS visible from the UK overnight - I'll post alerts closer to the time - #UK_ISS

christianp, to random
@christianp@mathstodon.xyz avatar

OK. The good news is that I know what my @BigMathsJam talk is going to be this year.

The bad news is: I need a guillotine

ColinTheMathmo,
@ColinTheMathmo@mathstodon.xyz avatar

@christianp @BigMathsJam Do you mean the type for cutting paper, or the type for cutting vegetables (or necks)?

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

Everyone has a photographic memory; some just don't have film. -- Steve Wright

ColinTheMathmo, to random
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Watch out for those affixes.

747

⬜⬜⬜⬜⬜⬜⬜⬜➡️➡️➡️➡️➡️⬇️⬜
➡️➡️➡️➡️➡️➡️➡️➡️⬆️⬜⬜⬜⬜➡️➡️

https://www.andrewt.net/puzzles/cell-tower/?p=747

Current streak: 93 (Neptunium)

Best streak: 93

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

In about half an hour, #UK_ISS #ISS pass, starting at 23:58:53, duration 139 secs, bright, Magnitude -2.1

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

In about half an hour, pass, starting at 22:21:56, duration 388 secs, exceptionally bright, Magnitude -3.5

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

Some passes of the #ISS visible from the UK overnight - I'll post alerts closer to the time - #UK_ISS

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

Pleased with this one ... and on the verge of extending my streak. Finally.

746

➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️

https://www.andrewt.net/puzzles/cell-tower/?p=746

Current streak: 92 (Uranium)

Best streak: 93

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

Learn from the experts. You will never live long enough to learn it all directly from experience -- Kop Kopmeyer

christianp, to random
@christianp@mathstodon.xyz avatar

People who moved to the UK from somewhere else: is Argos weird, or is it charming?

ColinTheMathmo,
@ColinTheMathmo@mathstodon.xyz avatar

@christianp To me it was ... unexpected. But then it was logical, though still a bit unusual.

It's certainly not charming, but never tipped over into weird.

ColinTheMathmo, to random
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In about half an hour, #UK_ISS #ISS pass, starting at 00:49:13, duration 11 secs, visible, Magnitude -1.2

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

Bother.

It looks like I mis-timed things and I'm going to be promoted to the next league in Duolingo.

I did not want that. 8-(

ColinTheMathmo,
@ColinTheMathmo@mathstodon.xyz avatar

@Martin_Whitworth I decided from the start to allow them to do their gamification and just go along for the ride.

I don't care too much, and occasionally roll my eyes at it, but I let them do it without getting too frustration, and the "Streak" thing is a good way to help me stay on track.

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

The irrationals are those exactly those reals that are a different distance from every rational.

ColinTheMathmo,
@ColinTheMathmo@mathstodon.xyz avatar

@soaproot Simply the time taken to unpick the sentence, and also you have this concept of "apartness" that I can't grok based on what you've written.

And I don't have time.

ColinTheMathmo,
@ColinTheMathmo@mathstodon.xyz avatar

@soaproot Exactly so, although this can (as you no doubt know) all be stated less formally.

ColinTheMathmo,
@ColinTheMathmo@mathstodon.xyz avatar

@soaproot Nice.

I have another theorem that you might be interested in. It has a longer setup, specifically because I want to share the unexpectedness I felt about the result. The result itself is easy to prove in the usual informal manner ... perhaps you'd be interested in formalising it.

(An answer of "no" is, of course, acceptable)

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