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Sarah Hart

@sarah-hart

Mathematician, speaker, author of Once Upon a Prime: the Wondrous Connections between Mathematics and Literature. Former Gresham Professor of Geometry, Professor Emerita of Mathematics at Birkbeck https://www.bbk.ac.uk/our-staff/profile/8004985/sarah-hart

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31.12.2023
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Latest posts by Sarah Hart @sarah-hart

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Babylonian tablet preserves student's 4,000-year-old geometry mistake A small clay tablet from the site of Kish in Iraq reveals a student calculated the area of a triangle incorrectly 4,000 years ago.

A bit of #maths #history at the @ashmoleanmuseum.bsky.social makes the news!

Making mistakes in maths is not a new thing, by a long, long way, and is an essential part of learning.

🏛️🎓 #MathsInMuseums #MathsToday

04.12.2024 08:14 👍 21 🔁 10 💬 0 📌 0
Preview
Christmas card 2024 As usual, I spent some time this November, designing this year's Chalkdust puzzle Christmas card (with some help from TD).

The online version of the @chalkdustmag.bsky.social 2024 Christmas card is now available at mscroggs.co.uk/blog/112.

It includes a link to a printable A4 version (@teachers: this can fill an end of term maths lesson!)

You can also still buy physical cards at mscroggs.co.uk/cards.

04.12.2024 09:05 👍 5 🔁 6 💬 0 📌 0
Image description: This poem is presented in the form an excel spreadsheet, with words in each cell. The line ‘Our cells shall merge themselves together’ is in a longer merged cell, and there are filter arrows on the line ‘Remove this filter from my heart’.
 
Love Excels
 
Let's spread ourselves on sheets of love,
and turn our data into poetry.
Our cells shall merge themselves together                                                                    
as you wrap your text around me.                                                      
                                                                          
Our sum is greater than our parts,
let's crunch our figures without compunction.
Remove this filter from my heart,
you give me form and function.
                                                                          
We shall frolic among the formulae,
pivot our tables now and often.
I will total all your rows
and you can add my column.
                                                                          
Brian Bilston

Image description: This poem is presented in the form an excel spreadsheet, with words in each cell. The line ‘Our cells shall merge themselves together’ is in a longer merged cell, and there are filter arrows on the line ‘Remove this filter from my heart’. Love Excels Let's spread ourselves on sheets of love, and turn our data into poetry. Our cells shall merge themselves together as you wrap your text around me. Our sum is greater than our parts, let's crunch our figures without compunction. Remove this filter from my heart, you give me form and function. We shall frolic among the formulae, pivot our tables now and often. I will total all your rows and you can add my column. Brian Bilston

Today’s poem is called ‘Love Excels’.

04.12.2024 09:20 👍 577 🔁 166 💬 32 📌 37

I'm here! I've moved over from X/Twitter. Some others Bridges/math-art people (I'm sure I'm missing some/many): @sarah-hart.bsky.social, @mathgrrl.bsky.social, @ayliean.bsky.social, @drmathart.bsky.social, @gelada.bsky.social.

29.11.2024 23:03 👍 6 🔁 2 💬 1 📌 0
Word Crunching


I 
wrote 
a poem 
on a page 
but then each line grew 
to the word sum of the previous two 
until I began to worry about all these words coming with such frequency 
because as you can see, it can be easy to run out of space when a poem gets all Fibonacci sequency 


Brian Bilston

Word Crunching I  wrote  a poem  on a page  but then each line grew  to the word sum of the previous two  until I began to worry about all these words coming with such frequency  because as you can see, it can be easy to run out of space when a poem gets all Fibonacci sequency  Brian Bilston

Today’s poem celebrates Fibonacci Day. It’s called ‘Word Crunching’.

23.11.2024 08:50 👍 1297 🔁 327 💬 35 📌 26
Welcome to the Royal Society | Royal Society The Royal Society is a Fellowship of many of the world's most eminent scientists and is the oldest scientific academy in continuous existence.

The Royal Society is on Bluesky! We are the independent scientific academy of the UK, founded in 1660 and dedicated to promoting excellence in science for the benefit of humanity. Follow us for the latest research, fascinating looks at science history, events and more: royalsociety.org

18.11.2024 15:47 👍 129 🔁 61 💬 4 📌 9

To be fair, he’d be out of his depth on a sheet of graphene.

21.11.2024 15:49 👍 2 🔁 0 💬 1 📌 0

Good luck with that!

21.11.2024 06:45 👍 1 🔁 0 💬 1 📌 0

Clearly the next question is: how many Bluesky users will there have to be before if we all buy a random lottery ticket, there’s a better than 50% chance that at least one of us wins the jackpot?

19.11.2024 21:29 👍 1 🔁 0 💬 0 📌 0

Wonderful! 🌍

19.11.2024 21:23 👍 1 🔁 0 💬 0 📌 0

Is that..”talking maths with your kids”?

We do various ciphers/encryption as well as steganography, it’s a lovely jumble of wordplay, number play, reasoning and riddles.

In short, yes!

19.11.2024 20:56 👍 0 🔁 0 💬 0 📌 0
Video thumbnail

My daughter and I like to make each other treasure hunts where the clues are a mix of puzzles, riddles, and cryptography.

The little snack I made last time is more than meets the eye…

19.11.2024 20:38 👍 8 🔁 1 💬 2 📌 0

Having trouble remembering which Naomi is sane and which one thinks vaccines cause time travel and squirrels are a government plot (probably)?

This simple rhyme should help:

If it’s Klein, you’ll be fine.
If it’s Wolf, watch yoursolf.

19.11.2024 19:51 👍 3 🔁 0 💬 0 📌 0
Timothy Gowers, Some recent developments in combinatorics
Timothy Gowers, Some recent developments in combinatorics YouTube video by Clay Mathematics Institute

There have been several remarkable developments in combinatorics, my field of mathematics. A few weeks ago I gave a talk to a general mathematical audience in which I described six breakthroughs from the last five years.

www.youtube.com/watch?v=726O...

19.11.2024 18:42 👍 143 🔁 43 💬 12 📌 4
Twitter message “Your account is deactivated. Sorry to see you go. #GoodBye”

Twitter message “Your account is deactivated. Sorry to see you go. #GoodBye”

Before deactivating, I posted on Twitter that I’m leaving for Bluesky.

I’m crushed to have to report that this has irked a person describing themselves in their bio as a “bronze-age AI gigachad”.

I get the feeling I’m not going to miss Twitter much.

18.11.2024 14:59 👍 7 🔁 0 💬 0 📌 0

Logicians: P is fine, it’s NP I’m worried about.

18.11.2024 14:46 👍 3 🔁 0 💬 1 📌 0

Argh!

18.11.2024 13:09 👍 0 🔁 0 💬 0 📌 0

Why thank you! 😊

17.11.2024 16:25 👍 1 🔁 0 💬 0 📌 0

This is going to be amazing. Walthamstow Rock’n’Roll book club is the best thing about Walthamstow, and about Rock’n’roll, and about books and about life in general. And Mark Hart who runs it is the World’s Greatest Human. (Which of course is why I married him.) @rnrbook-club.bsky.social

17.11.2024 11:49 👍 14 🔁 2 💬 2 📌 0
A poem about the experience of learning.

A poem about the experience of learning.

#MathsEdPoetry day 2.
Both the @atmmathematics.bsky.social principle "the power to learn rests with the learner" and Daniel Willingham's phrase "learning is the residue of thought" point to the idea that learning is done by the learner. It is not something that can be done to them. From MT287.

17.11.2024 09:13 👍 3 🔁 2 💬 0 📌 0
New York Times games app Sudoku descriptor “try this numbers game, minus the math”

New York Times games app Sudoku descriptor “try this numbers game, minus the math”

This is how the NYT describes Sudoku. Why disavow the lovely maths involved: logic patterns, etc - loads of good stuff? Really they mean “try this math game, minus the arithmetic”.

In fact there’s so much fun related maths I gave a Gresham lecture all about it

www.gresham.ac.uk/watch-now/ma...

17.11.2024 09:25 👍 28 🔁 6 💬 5 📌 2

You will know, despite it not being in my handle any more, that Math(s) is my homeland.
So I've made this starter pack of excellent math(s) communicators in case you'd like to follow them too.

go.bsky.app/8JvssAA

15.11.2024 16:37 👍 100 🔁 35 💬 12 📌 2

Thanks @kityates.bsky.social for taking the time to do this! V liking bluesky!

15.11.2024 18:19 👍 1 🔁 0 💬 1 📌 0

We're pleased to be included on this starter pack of math(s) communicators by the brill @kityates.bsky.social! Check it out for a who's who of talking math(s) in public: bsky.app/starter-pack...

15.11.2024 16:51 👍 6 🔁 1 💬 1 📌 0
Neumann Prize | The British Society for the History of Mathematics The BSHM are delighted to announce that the 2023 Neumann Prize winner is Stephen M.

Thanks @teakayb.bsky.social - I loved @robeastaway.bsky.social’s recent book Much Ado About Numbers, about Shakespeare + maths.
The British Society for the History of Maths awards a biennial prize for the best pop maths/history book, loads of good ones among past winners www.bshm.ac.uk/neumann-prize

15.11.2024 17:52 👍 3 🔁 1 💬 1 📌 0
Monetisation 

The advert said 
MONETISE YOUR FOLLOWERS 
so he thought 
he would respond; 

by painting them 
in the changing light, 
like waterlilies 
in a pond.


Brian Bilston

Monetisation The advert said MONETISE YOUR FOLLOWERS so he thought he would respond; by painting them in the changing light, like waterlilies in a pond. Brian Bilston

Today’s poem is called ‘Monetisation’.

14.11.2024 09:15 👍 981 🔁 264 💬 23 📌 26

Good morning.

Word of the Day is as beautiful as it is underused. ‘Confelicity’ is finding joy in the happiness and success of others.

14.11.2024 07:43 👍 29994 🔁 5217 💬 680 📌 503

Morning!

14.11.2024 06:36 👍 2 🔁 0 💬 0 📌 0

Fascinating - thanks for sharing!

13.11.2024 21:47 👍 1 🔁 0 💬 0 📌 0