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Benjamin Cornish

@mathematicians-pod.bsky.social
127 followers 90 following 263 posts

Teacher. Mathematician. Podcaster ko-fi.com/benjamincornish

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Benjamin Cornish @mathematicians-pod.bsky.social · 29/09/2026
numstep.app/games/numste...
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Benjamin Cornish @mathematicians-pod.bsky.social · 28/09/2026
numstep.app/games/numstep/
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Benjamin Cornish @mathematicians-pod.bsky.social · 25/09/2026
numstep.app/games/numste...
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Benjamin Cornish @mathematicians-pod.bsky.social · 24/09/2026
numstep.app/games/numste...
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Benjamin Cornish @mathematicians-pod.bsky.social · 23/09/2026
Trying to get the alternator out is like the sofa moving problem on very hard mode.
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numstep.bsky.social @numstep.bsky.social · 26/08/2026
Here's today's #Numstep #Puzzle Can you solve it? #logic #math Full printable here: app.box.com/s/z2trdbrgoz...
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Benjamin Cornish @mathematicians-pod.bsky.social · 24/08/2026
Hey folks, I've started a #daily #logicpuzzle. I call it #numstep. Draw a self avoiding walk through my grids, if you can. bsky.app/profile/nums...
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numstep.bsky.social @numstep.bsky.social · 24/08/2026
Here is today's #numstep. Can you solve it? #logic #puzzles
app.box.com
Numstep_Daily_2026-08-24.pdf | Powered by Box
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Benjamin Cornish @mathematicians-pod.bsky.social · 15/08/2026
I saw some great #maths in action today by Andy (Mr Magic) at the #canfordschool summer fete. Tell me you don't want to try this at home...
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Benjamin Cornish @mathematicians-pod.bsky.social · 12/08/2026
I built my solar model using an incorrect gear system... The planets are in complete disorrery.
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Benjamin Cornish @mathematicians-pod.bsky.social · 12/08/2026
I just showed my wife my pinhole camera. She said "all I can see is a prick". So, not happy about that. #eclipse
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Benjamin Cornish @mathematicians-pod.bsky.social · 03/08/2026
The latest episode of #themathematicianspod this time it's another double bill with Varahimihira and Bhaskara I. ...And what's that... Mainly an episode about geography? I'll grab the popcorn. #mathshistory #talkingmaths
podbean.com
Episode 59 - Varāhamihira (And Bhāskara I) - Back to School
Was Varāhamihira the world's first statistician? Could a sixth-century mathematician really predict the monsoon using observational data? And how did Bhāskara I produce one of the greatest approximati...
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Benjamin Cornish @mathematicians-pod.bsky.social · 29/07/2026
The London #sciencemuseum have a great collection of maths history. I saw: A liquid computer for economic differential equations; an old trig circular slide rule; and the analogue computer for tide predictions. Good times all round, strongly recommend. #mathshistory #mathsinmuseums
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Benjamin Cornish @mathematicians-pod.bsky.social · 29/07/2026
I'm having a great time playing with aperiodic tesselation in the pattern pod at the London #Sciencemuseum. Well done to the designers
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Benjamin Cornish @mathematicians-pod.bsky.social · 29/07/2026
I'm having a great time playing with aperiodic tesselation in the pattern pod at the London #Sciencemuseum. Well done to the designers
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Benjamin Cornish @mathematicians-pod.bsky.social · 28/07/2026
Warning, bad science joke: Why was Aristotle's house so dusty? Because his nature abhorred a vacuum.
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Benjamin Cornish @mathematicians-pod.bsky.social · 26/07/2026
A train leaves the station (bottom) heading west. Can it return to the station heading east? Is there anywhere the train might get stuck? Is there anywhere the train can reach but only from one direction? I call this directed node networks. #mathsky #graphtheory #math4kids
A children's wooden train set. Designed with pleasing loops.
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Benjamin Cornish @mathematicians-pod.bsky.social · 24/07/2026
Here are the ways to draw 4 lines with distinct intersection arrangements. Can you give me an interesting question that is prompted by this image? #mathsky #holidaymaths
Source: https://i.sstatic.net/6w4OZ.jpg

A diagram showing the possible distinct arrangements of 4 lines, grouped by number of intersections.
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Benjamin Cornish @mathematicians-pod.bsky.social · 26/06/2026
Here's a fun question... By the way I need an answer real fast
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Benjamin Cornish @mathematicians-pod.bsky.social · 26/06/2026
I just claimed my #tiletoday. A small bridge in my village, forever a digital link to maths history. Claim yours today at www.tile.today , it's free and fun. Just walk somewhere, and claim it for yourself. Like Pokémon go but without the teddies.
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Benjamin Cornish @mathematicians-pod.bsky.social · 10/06/2026
New episode is live, of #themathematicianspod. A much longer production process for my longest scraped episode. This time featuring the snorts and sniffles of my new baby asleep on my chest. Tune in to learn about merchants and maths in #ancientindia, with Yavanesvara. #talkingmaths #mathsky
mathematicians.podbean.com
Episode 57 - Yavanesvara - The Lord of the Greeks | The Mathematicians Podcast
The Silk Road carried spices, gemstones, ideas... and, occasionally, trigonometry. In this episode of The Mathematicians Podcast, we follow the mysterious figure known as Yavanesvara, the "Lord of the...
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Benjamin Cornish @mathematicians-pod.bsky.social · 21/05/2026
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.
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Benjamin Cornish @mathematicians-pod.bsky.social · 20/05/2026
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!
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Benjamin Cornish @mathematicians-pod.bsky.social · 17/05/2026
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
open.spotify.com
Episode 56 - Pingala - Beats us up
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Benjamin Cornish @mathematicians-pod.bsky.social · 07/05/2026
"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
An extract from a statistics exam - this one on combinatorics
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Benjamin Cornish @mathematicians-pod.bsky.social · 03/05/2026
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?
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Benjamin Cornish @mathematicians-pod.bsky.social · 23/04/2026
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
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Benjamin Cornish @mathematicians-pod.bsky.social · 22/04/2026
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)
A screenshot of a podcast analytics page showing the number of listeners from various countries. Including one with the label "Palestinian Territory, Disputed"
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Benjamin Cornish @mathematicians-pod.bsky.social · 20/04/2026
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
podbean.com
Episode 55 - Injective - Thomas K Briggs - On The Mathematicians' Library
In this special book club episode of 'The Mathematicians Podcast', I sit down with author, maths communicator, and museum learning consultant, Thomas K. Briggs. Join us for a glass of wine and a deep ...
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Benjamin Cornish @mathematicians-pod.bsky.social · 17/04/2026
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
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Benjamin Cornish @mathematicians-pod.bsky.social · 13/04/2026
Who can tell me what this #wildcurve is? A stable fluid boundary on an angled chopping board with a laminar water jet. #mathsky #mathsinthewild
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Benjamin Cornish @mathematicians-pod.bsky.social · 12/04/2026
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.
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Benjamin Cornish @mathematicians-pod.bsky.social · 11/03/2026
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
A network diagram showing the orbits of numbers with starting values between 1-250, and path lengths of at least 10. Six cycles have been identified, and coloured.
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Benjamin Cornish @mathematicians-pod.bsky.social · 10/03/2026
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)
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Benjamin Cornish @mathematicians-pod.bsky.social · 03/03/2026
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?
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Benjamin Cornish @mathematicians-pod.bsky.social · 26/02/2026
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
oeis.org
A117030 - OEIS
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Benjamin Cornish @mathematicians-pod.bsky.social · 18/02/2026
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
theartofmathematicspodcast.com
The Art of Mathematics – Enthusiastic mathematicians and beautiful math
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Benjamin Cornish @mathematicians-pod.bsky.social · 17/02/2026
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
podbean.com
Episode 53 - Nabu-rimanni & Kidinu - Systematically Speaking
When is an approximation "good enough"? This week on The Mathematicians Podcast, host Benjamin Cornish opens the doors to his  gem and fossil shop to discuss why a polished piece of glass, or a clever...
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Benjamin Cornish @mathematicians-pod.bsky.social · 17/02/2026
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
oeis.org
A393283 - OEIS
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Benjamin Cornish @mathematicians-pod.bsky.social · 07/02/2026
I just lost a game of rock paper scissors, four - nill, to a lobster
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Reposted by Benjamin Cornish
David K Butler @davidkbutler.bsky.social · 02/02/2026
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
The whole image has a square grid marked in faint blue lines.
At the top, a heading in blue reads "Iceberg diagrams".
At the bottom, there is a horizontal blue line, with the space below it shaded in blue.
Five identical grey shapes with black edges sit at different heights relative to the blue line. The edges are made by joining gridpoints horizontally, vertically or diagonally.
Starting at the top left, the edge goes one step right, one step diagonally right and down, two steps down, one step left, one step diagonally left and down, one step diagonally left and up, one step up, one step diagonally right and up, and one step up, to come back to the start.
The leftmost shape is fully above the blue line and has the number 8 written above it.
The next shape is one gridline lower and has the number 6 written above it.
The next shape is one gridline lower and has the number 0 written above it.
The next shape is one gridline lower and has the number -5 written above it.
The next shape is one gridline lower and is now fully below the blue line, and has the number -8 written above it.
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Benjamin Cornish @mathematicians-pod.bsky.social · 28/01/2026
My latest obsession with maths teacher bingo has now grown to a 5*6 grid... I might have to stop here. #alevelmaths
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Benjamin Cornish @mathematicians-pod.bsky.social · 27/01/2026
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
mathematicians.podbean.com
Episode 52 - Apastamba - What He Said. | The Mathematicians Podcast
Episode 52 of The Mathematicians Podcast, takes us deep into the world of ancient Indian mathematics with a focus on Apastamba and his contributions to the Sulvasutras. Following in the footsteps of B...
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Segar Rogers @segarrogers.bsky.social · 25/01/2026
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
Nine 'rules' of ratio tables laid out in a 3 by 3 grid format.
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Benjamin Cornish @mathematicians-pod.bsky.social · 24/01/2026
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
oeis.org
A389543 - OEIS
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Benjamin Cornish @mathematicians-pod.bsky.social · 23/01/2026
Who wants to play: "Guess what I've been teaching" #alevelmaths
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Segar Rogers @segarrogers.bsky.social · 22/01/2026
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.
A cross-section of the celestial sphere annotated with transliterated Sanskrit terminology.
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Benjamin Cornish @mathematicians-pod.bsky.social · 22/01/2026
I've started a "Maths lesson Bingo" with my students. Can anyone suggest some phrases for my next card to be 4*4? #alevelmaths
3*3 bingo card of phrases I say a lot each day, eg "have you checked the formula book?"
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Benjamin Cornish @mathematicians-pod.bsky.social · 21/01/2026
That's not a position vector, it's just 3 components wearing a trench coat.
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Benjamin Cornish @mathematicians-pod.bsky.social · 21/01/2026
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
geogebra.org
Vector-bet
Vector-bet Game
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