@christianp@mathstodon.xyz
@christianp@mathstodon.xyz avatar

christianp

@christianp@mathstodon.xyz

Mathematician, koala fan, mathstodon.xyz admin,
⅓ of https://aperiodical.com. He/him

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

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

christianp,
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@LittleFrank yeah, it's not as idiosyncratic as it was.

This question was prompted by me going into Sainsbury's to pick up a thing from the Argos counter. To someone who doesn't know the system, it'd be odd to see people walking up to this counter and being given all sorts of stuff.

christianp, (edited ) to random
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You are shown a set of four cards placed on a table, each of which has a number on one side and a color on the other.

The visible faces of the cards show yellow, 5, 4, purple.

Which card(s) must you turn over in order to test that if a card shows an even number on one face, then its opposite face is purple?

christianp,
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@mszll I hadn't heard of that before!

christianp,
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@sedincore can you put a content warning on that please?

christianp,
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@sedincore oh yes it is, you're quite right!

christianp,
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@dneary abductive logic! Love it!
There was a really good, unpolished android game called Caterpillar Logic that used this idea, but it looks like the developer hasn't updated it to Google's satisfaction so it's disappeared from the Play Store

henryseg, to random
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What parking space number is under the backpack?

christianp,
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@henryseg love to see it in real life!

christianp, to random
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Microsoft Teams continues to reveal its true nature as a billion sprint goals in a trenchcoat:

When you attach an image to a post, it's saved at the top of the Sharepoint folder belonging to the channel. (So the "files" tab becomes a cluttered mess, but that's not what I'm cross about now)

As well as restrictions on valid filenames, filenames of attachments have to be unique.

So if you've attached drawing.png once before, and upload another drawing.png, Teams asks if you want to replace the original, or keep both. If you keep both, it adds (1) to the filename.

... unless there's already a "drawing (1).png", in which case it asks you AGAIN what you want to do.

Is there a Big Brain Cloud Services reason it can't automatically find the smallest number that works?

christianp,
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@OscarCunningham it at least does "drawing (2).png"

christianp,
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@pozorvlak indeed

christianp,
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@pozorvlak but also, if there was a coherent design, they didn't have time to follow it

christianp, (edited ) to random
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I've been told it's the International Day Against Homophobia, Biphobia, Aphobia and Transphobia.

If you're any of those: I ain't afraid of you! 😆

Keep on doing what you're doing.

Update: apparently aphobia is in, too. Not afraid of them, either. Suggestions for further things other people are being or doing that are none of my business are welcome.

christianp, to random
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Me about a week ago: I wonder if I could use my diagramming tool to make an animation?

Me a week later: I've basically cloned manim

christianp, to random
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The good thing about my name is that when the github issue tracker truncates it, it gives the right energy

christianp, to random
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Someone in the @TMiP WhatsApp group told me about a TikTok game where you're shown a sequence of five numbers, and have to guess what order they go in.

I've made my own version of it: https://somethingorotherwhatever.com/number-order-game/

"Order those numbers! You'll be shown five numbers, between 100 and 999. Try to guess what order the numbers will go in, from smallest to biggest." I'm shown 995, 164, 706, 576 and 227, and place them in 5th, 1st, 4th, 3rd and 2nd positions. Then it says "You did it!"

gvwilson, to random
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A minimalist JS/CSS/HTML slideshow framework: https://gvwilson.github.io/slides/ https://github.com/gvwilson/slides

christianp,
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@gvwilson I've been doing the same thing! I got fed up with reveal.js doing stuff I don't understand well enough to change.
Scroll-snap is great!

christianp, (edited ) to random
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Pals, what's the least egregious TV I can buy today, in the UK?
I want as little "smart" internet-connected nonsense as possible. Not bothered about 4k or massive size, but it should sound and look good.

That is, what's the Brother laser printer of TVs?

christianp,
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@glencoe thanks, but I don't think that brand exists here

christianp,
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@jepdee yes, I saw that too. I will investigate!

christianp,
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I'm in currys. The vast majority of TVs are bigger than 50".
How big are people's living rooms?!

I feel old

ProfKinyon, to random
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Creating slides for a half hour talk (25 minutes + 5 for questions). So 100 slides should do, right? 😁

christianp,
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@ProfKinyon

You gotta pump those up. Those are rookie numbers in this racket.

OscarCunningham, to math
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I have a question about the aperiodic spectre tile (or the hat/turtle).

I know that the proof of aperiodicity works by showing that the tiles must fit together in a hierarchical structure that eventually repeats itself at a larger scale. But the larger units aren't literally scaled copies of the spectre. I also know that there is some freedom as to how you draw the edges of the spectre.

Is there a way you can draw the edges that allows you to literally use spectres to cover a larger copy of themselves? If so, is this way of doing it unique?

#Math #Maths #Mathematics #Spectre #Tiling #Aperiodic #AperiodicMonotile

christianp,
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@OscarCunningham I think probably not - there are two (or more?) different metatiles

christianp, to random
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On 20th June, I'll be in Glasgow for the workshop "Towards improving the accessibility of the mathematical sciences for visually impaired people", talking about my work on Chirun (https://chirun.org.uk/)

If any mathstonauts will be in Glasgow that day, it'll be nice to meet you!

christianp,
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@julesh or, since I'm teetotal, type 2 diabetes

christianp, to random
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I'm going to tell you two statements, each made by YouTube about a video I uploaded:

a) it was uploaded 1 year ago.
b) it was uploaded on 5th June 2022.

Could these statements both be about the same video?
If so, are they both accurate?

christianp,
@christianp@mathstodon.xyz avatar

An update from another corner of the internet:

Two statements about a commit on GitHub:

a) It was made 2 years ago.
b) It was made on 17th September 2022.

The controversy deepens!

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