Christian Lawson-Perfect

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

Homepage: http://somethingorotherwhatever.com
Location: Whitley Bay, UK
Pronouns: he/him
Favourite number: 3435

Public Key

npub197gdj7fr20gtagv3w5zvjry79yvaer830d70zxsww8vqskajmhwqq0q2n4

NIP-05 Address

christianp_at_mathstodon.xyz@momostr.pink

Profile Code

nprofile1qqszlyxe0y3485975xgh2pxfpj0zjxwu3nchkl83rg88rkqgtwedmhqprpmhxue69uhhyetvv9ujumt0d4hhxarj9ecxjmntqyvhwumn8ghj7un9d3shjtnddakk7um5wgh8q6twdvhsdjrvg5

Publishing to

relay.momostr.pink

relay.noswhere.com

Author Public Key

npub197gdj7fr20gtagv3w5zvjry79yvaer830d70zxsww8vqskajmhwqq0q2n4

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Last Notes

2024-11-13 10:47:43

Just had a reminder that in a few weeks I'll be in Bristol, talking to the school of maths about accessible maths material.
https://www.bristolmathsresearch.org/seminar/christian-lawson-perfect/
Are there any Bristolian mathematicians here?

2024-11-05 18:41:33

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I've decided that running my own email server was more work than it was worth.
Can anyone recommend an email service I can use with my own domain, costing at most £5/month?

2024-11-04 13:22:17

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had a sudden panic that I'd lost my nice diary app, but I'd checked it in to my git forge and that's backed up on the external HD!

2024-11-04 10:05:42

Eugh... the SD card in the raspberry pi that powers the cupboard computer didn't survive being powered down for the house move.
Now I need to start from scratch! At least all the real data is on an external HD (and I have backups of that)

2024-10-08 15:31:02

There's a big wave of spam again. Fortunately, whatever stupid teenager is running it is just using the same script as last time, so my auto-moderator script still works.

2024-10-04 04:37:11

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hooray, they arrived!

2024-09-24 13:25:49

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having seen the TeX produced by our senior staff: they could definitely do with a refresher

2024-09-24 13:16:03

A question for academic matheamaticians: have you ever had any formal training in writing #TeXLaTeX?
Does your department offer anything to colleagues who want to improve their TeX skills?

2024-09-24 10:37:35

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you could also have a very long post which should get the "show more" button.

2024-09-24 10:33:37

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that's a really good idea!
I didn't see a post with hashtags at the end, which some clients like to display separately from the main text.

2024-09-14 10:55:13

Lots of new people on mathstodon.xyz today. Welcome, everyone!
If you'd like people to find you, it's a good idea to write a post with the hashtag #introduction, saying who you are and what you're into.

2024-09-06 08:47:19

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if you've voted, the majority is currently correct

2024-09-06 08:00:09

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Now here's a question. If you have a reference knobbly ball or is it morphic equivalent, please don't look at it.
How many times does this pattern repeat around the seam?

2024-09-06 07:57:03

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But here's an interesting pattern that I don't think I've noticed before.
The ball shows one line of symmetry because it's made from two identical halves, glued together.
There's a repeating pattern along the line: little knobble, two big knobbles, little knobble, gap.
That's interesting!
https://media.mathstodon.xyz/media_attachments/files/113/089/532/399/480/799/original/b94081710d1f438b.jpg

2024-09-06 07:47:47

The cool thing about this ball (apart from the colour scheme) is that it shows how the icosahedron and dodecahedron are each other's duals - the big knobbles are in the middle of the icosahedron's triangular faces and the little knobbles are in the middle of the dodecahedron's pentagonal faces.
https://media.mathstodon.xyz/media_attachments/files/113/089/496/966/570/640/original/fdc591f75ca220c6.jpg
https://media.mathstodon.xyz/media_attachments/files/113/089/497/613/361/260/original/c2fa123c14cdeddf.jpg
https://media.mathstodon.xyz/media_attachments/files/113/089/497/818/192/375/original/8a22c6dd5a5e1622.jpg

2024-09-03 08:30:29

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oh hey, it's that meme format I made! This version's by Davide Castelvecchi - https://aperiodical.com/2022/05/didnt-graduate-texts-in-mathematics/

2024-08-19 06:28:33

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for once, I have one! Still on holiday in the Netherlands.
https://media.mathstodon.xyz/media_attachments/files/112/987/269/573/806/940/original/0f8e0c75c35ed0d5.jpg

2024-08-04 11:55:28

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don't worry about paying, but yes, give me your address. I'll try to remember to post some next time I'm in the office

2024-08-04 08:54:32

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I wonder if I could get some mathstodon.xyz stickers to you?

2024-08-02 07:31:31

For those of you starting to think about preparing your material for the next academic year, here's a reminder of the projects I work on:
Chirun is a tool for producing accessible course material from LaTeX or Markdown source. You can use it through a web interface or as a command-line tool on your own PC.
https://chirun.org.uk/
Numbas (@npub16lz…96kp) is an e-assessment system designed for mathematical subjects. There's a big database of free-to-use existing material and as well as running standalone it integrates with most virtual learning environments.
https://www.numbas.org.uk/

2024-03-26 11:46:38

Who would know how to make a guess at the answer to this question: is internet traffic pretty much equal numbers of 1s and 0s, or is there noticeably more of one than the other?