Gosh. I've just recorded the latest episode of #themathematicianspod with a raw time of 46 minutes. A record for me with a scripted episode. Hopefully the story of #yavanesvara will be worth it. Coming to you in probably 2-3 weeks.

I've just started listening to a fantastic #podcast on the #historyofengland by @historyengland.bsky.social I cannot recommend it enough for style, clarity and wit. Great job, David!

Hey, it's my birthday today. But please don't feel embarrassed that you didn't get me anything, all I want for my birthday is for you to enjoy today's new episode of #themathematicianspod. This time, Pingala, and a 10 minute beat poem... Please forgive me. #mathsky #mathshistory #poetry

"A fair 8-sided dice has faces labelled K,A,N,G,A,R,O,O. The dice is rolled repeatedly..." Just another normal day as a mathematician. #AlevelMaths

I've been reading 'James and the giant Peach' with my daughter. Spoiler alert: Does anyone know how many seagulls it would actually take to lift up a peach the size of a house?

I've been struggling to make a joke about how "a man with a hammer sees only nails." Except I have a rusted wheel bearing that I need to hammer "out", whilst a happer typically pushes "in". I was delighted to discover a "slide hammer" Is a real tool. And now I own one. P.s. got the bugger

I just glanced over my analytics page for #themathematicianspod. I am delighted that I have reached so many countries. *Scrolls down to near the bottom of the list* Oh cool, a single download from #Palestine... Wait, "Disputed" ‽ Could we not just say Palestine? (Or OPT, as the UN does)

Why, it's another episode of #themathematicianspod this time an interview episode with the fabulous @teakayb.mathsy.space, author of #themathrmaticianslibrary. Listen in to hear his thoughts on writing a book about books about maths. As well as more history and philosophy. #talkingmaths #mathsky

I've just finished watching "Death by lightning" on Netflix. They appear to have missed the most interesting aspect of the #POTUS 's life, that President Garfield developed his own distinct proof of #Pythag, one without using any squares. Otherwise a good watch. #mathsky #somepresidentswereclever

Who can tell me what this #wildcurve is? A stable fluid boundary on an angled chopping board with a laminar water jet. #mathsky #mathsinthewild

Tonight you can draw a straight line between Jupiter and Venus... I mean what are the odds of that! #AstrologyTruth P.s. go outside and look up, it's really good for your health to remember how small we are.

My first attempt at a #DiscreteDynamicalSystem Take a number, n If (n-1) is prime then map n -> n^2 If (n-1) is composite then map n-> Aliquot sum of (n-1) Numbers 1-19 all end in a cycle. I am not sure about 20. eg. 6 -> 36 -> 13 -> 16 -> 9 -> 7 -> 6. #mathsky #recreationalmaths #mathsart

Competition time: What are the "Rules", and what happens to 20? (Spoiler - my PC has counted 31 steps from 20 and hit a number too big to process, no cycle in sight)

Try this. Take a number, n, split it into proper prime divisors. Write those, ascending, as the place values for a new term base n. Repeat this recursively. I think only 3 non-prime-powers will terminate. 10-> 25_10 25-> 5_25 5->0 12-> 23_12 27-> 3_27 3-> 0. What is the third number?

Competition time: A sequence stats 1, k, ... Each new term is the product of the last two subtract the sum of the other previous terms. Which sequence grows faster k=1 or k=2 ? #oeis oeis.org/A117030

Just had a fun conversation about Primitive Pythagorean Triples with Carol Jacoby from: theartofmathematicspodcast.com Can you find a coordinate M:(a,b) such that |OM|=|MA|=k, with O:(0,0) & A:(20,20) and k an integer? You should be able to listen in at the end of March #talkingmaths #mathsky

Happy half term holidays! I am celebrating by releasing another episode of #TheMathematicianspod. Find out about Systems A & B today with a double bill of 'Babylonian' Mathematicians. www.podbean.com/eas/pb-vjqv3... #talkingmaths #mathsky #mathspodcast

New oeis.org/A393283 just dropped. Take a triangular array starting (0),(1,0) Now draw a ray from the tip down to the next term. Each new term is the sum of terms on or adjacent to this ray. 0 1,0 1,1,0 2,3,2,0 Try this in mod 2 for a #cellularautomata. #mathsky #sequences #recreationalmaths

I just lost a game of rock paper scissors, four - nill, to a lobster

Here is a full set of iceberg diagrams. The score is how many full squares there are, counting the ones above the waterline as positive and the ones below the waterline as negative. Given a list of integers (eg 8, 6, 0, -5, -8) can you make an iceberg that will produce exactly that list? #MathSky

My latest obsession with maths teacher bingo has now grown to a 5*6 grid... I might have to stop here. #alevelmaths

New #mathspodcast episode just dropped of the #themathematicianspod, if you want to listen to #Baudhayana again, but with slightly updated mathematics, you will love the episode on #Apastamba A tower is built with one brick on top of another. Come meet India's second brick! #talkingmaths #mathsky

Some 'aspects/rules' of ratio tables ... collected together as an aid to proportional reasoning. 'El. V–16' = Euclid's Elements Book 5 Proposition 16 #UKMathsChat #iTeachMath

New sequence just dropped to the #oeis Start with the numbers [2,2,...] Then each new number is the product of the last two, written in mod n. The sequence stops when there is a repeating pair of consecutive numbers. a(n) is the length of the above sequence. oeis.org/A389543 #mathsky

Who wants to play: "Guess what I've been teaching" #alevelmaths

A diagram for a diagram-less tradition; gradually making some sense of Brahmagupta's Khandakhadyaka. With a couple of shadow measurements and the angle of the rising sun he could calculate the time of day. Astonishing really.

I've started a "Maths lesson Bingo" with my students. Can anyone suggest some phrases for my next card to be 4*4? #alevelmaths

That's not a position vector, it's just 3 components wearing a trench coat.

New game just dropped: #Vector-bet Can you create a letter of the alphabet using a polynomial with vector coefficients? Have a play for yourself with my #GeoGebra widget: www.geogebra.org/m/hv99xfkj Featuring drag and drop vector tools and a squiggly pen! #sillymaths #mathsky

Follow up from my #alevelmaths student: If you use 2D vectors for a high order polynomial, the resulting plot is, once again, 2D - however it is highly disorganised: Here we see a Quintic Equation. #mathsky

A great observation from my #Alevelmaths student: If you create a polynomial with vector coefficients $r=a+bt+ct^2+dt^3...$ you can get higher dimensional equivalents of the polynomial. Here is a 3D quartic equation. #mathsky

New sequence just dropped to the #OEIS Have you ever wondered how many sides are needed on a k-gon such that an inscribed and circumscribed k-gon calculates the area of a unit circle with accuracy bounds up to n digits? I know I have! If you have a 12-gon will tell you π=3 oeis.org/A391013 #mathsky

My new #OEIS sequence just dropped. Least k > a(n-1) such that k + the sum of all previous terms = 0 (mod (k-2)), with a(1)=1 and a(2)=2. 1,2,3,4,... (1+2+3+4+n) Is a multiple of (n-2). ...5,... What comes next? oeis.org/A390783 #mathsky

Very happy with this two cord braid this morning

I am delighted to share with you my first episode of the new year, and my first for the history of maths in #India. Come and listen to some instructions with rope with #Baudhayana. www.podbean.com/eas/pb-tueww... #mathstalk #mathsky

Hey folks, I'm looking to record another episode of #Un-NaturalNumbers, the YouTube maths chat show, soon. If you want to have a go at presenting a cool fact about the number 8 give me a buzz. Or pass the invite on to someone All you need is good WiFi and something interesting to say #mathatalk

Write down the Fibonacci numbers, next find the remainder of each one when you divide it by your favourite number. Then notice how long it takes for a repeating cycle. Rinse and repeat. #mathsky #pisano

Dear @tmip.bsky.social #MerryChrisTMiP Love, Ben #mathsky #Christmaths

Which is better, artistically, to see the layers of fractal pentomino tiles, or just a sea of mini pentominoes? #pentomino #mathart #mathsky #tessellation

Here is an improved mosaic of pentominoes, this time without using a 'tile stamp' method and instead a more organic fill. It contains... F| 565 I| 952 L| 197 N| 196 P| 1068 T| 1116 U| 1040 V| 538 W| 532 X| 396 Y| 2039 Z| 109

Back when I was a groomer at the zoo, my main job was cutting the lions hair

Here is a headshot of me made up of 120,000 pentominoes, each given a single colour, averaged against the original jpeg. The 10,000 'tiles' contain all 12 pentominoes and are randomly selected from the available 2339 ways to create a 6*10 tile. Still a work in progress...

Enhance...

I'm getting closer

That's more like it

I very nearly did something interesting

My daughter and I were outraged this morning watching #ShauntheSheep The goat unwinds the post and eats the grass in an unmistakable Archimedean spiral. What do you think should have happened ? #mathsky #kidmaths

Have you ever wondered what the smallest possible Dobble set is? Or why you can't construct a Heptagon. Or what a Mersenne Prime is? Find out on this latest episode of #Un-NaturalNumbers, the #mathschatshow #mathstalk #mathsky youtu.be/4rszftYsCUo

Back with some beautiful mathematics :) Let's develop some intuition behind the Möbius strip - a shape in mathematics with only one side and one edge!

Apparently you don't get to choose when you start a new obsession... #logic #riddles #nospoilers #threegods en.wikipedia.org/wiki/The_Har...