Benjamin Cornish
@mathematicians-pod.bsky.social
Teacher. Mathematician. Podcaster
I just had a letter box delivered... Which uses up my irony budget for the week.
November 4, 2025 at 1:57 PM
I just had a letter box delivered... Which uses up my irony budget for the week.
Just this year's quince harvest.
October 23, 2025 at 2:52 PM
Just this year's quince harvest.
It turns out it's really hard to draw #Isometric paper by hand.
My teacher always told me I wouldn't walk around with a protractor in my pocket, and it turns out she was right.
In other news, I might have discovered a new #OEIS
Spoiler: 1, 6, 18, 45, 87
#mathsky
My teacher always told me I wouldn't walk around with a protractor in my pocket, and it turns out she was right.
In other news, I might have discovered a new #OEIS
Spoiler: 1, 6, 18, 45, 87
#mathsky
October 21, 2025 at 5:50 PM
It turns out it's really hard to draw #Isometric paper by hand.
My teacher always told me I wouldn't walk around with a protractor in my pocket, and it turns out she was right.
In other news, I might have discovered a new #OEIS
Spoiler: 1, 6, 18, 45, 87
#mathsky
My teacher always told me I wouldn't walk around with a protractor in my pocket, and it turns out she was right.
In other news, I might have discovered a new #OEIS
Spoiler: 1, 6, 18, 45, 87
#mathsky
I do love it when I am browsing the #OEIS and I find a comment that was within the last few weeks. Oddly titillating to know that someone else passed this way so recently.
oeis.org/A011545
#mathsky
oeis.org/A011545
#mathsky
October 20, 2025 at 8:12 PM
I do love it when I am browsing the #OEIS and I find a comment that was within the last few weeks. Oddly titillating to know that someone else passed this way so recently.
oeis.org/A011545
#mathsky
oeis.org/A011545
#mathsky
Another lovely night playing "conservation of energy" with my daughter. The box says 8+ but I would easily give it a 10/10.
#mathsbuild
#classicalmechanics
#mathstoys
#mathsbuild
#classicalmechanics
#mathstoys
October 10, 2025 at 7:05 PM
Another lovely night playing "conservation of energy" with my daughter. The box says 8+ but I would easily give it a 10/10.
#mathsbuild
#classicalmechanics
#mathstoys
#mathsbuild
#classicalmechanics
#mathstoys
For any polygon, the maximum number of diagonals that can intersect at a point (that is not the centre) is 7.
#mathsart
#mathsky
Possibly my fact for episode 7 of #Un-NaturalNumbers
math.mit.edu/~poonen/pape...
#mathsart
#mathsky
Possibly my fact for episode 7 of #Un-NaturalNumbers
math.mit.edu/~poonen/pape...
October 10, 2025 at 6:00 PM
For any polygon, the maximum number of diagonals that can intersect at a point (that is not the centre) is 7.
#mathsart
#mathsky
Possibly my fact for episode 7 of #Un-NaturalNumbers
math.mit.edu/~poonen/pape...
#mathsart
#mathsky
Possibly my fact for episode 7 of #Un-NaturalNumbers
math.mit.edu/~poonen/pape...
The people asked for a poem written by #Boethius, so I will provide a poem by Boethius. If you want to hear me read this, then check out this week's #TheMathematiciansPodcast for an episode of philosophy, theology and maths.
#TalkingMaths
#MathsSky
Find it here: www.podbean.com/eas/pb-gwbmn...
#TalkingMaths
#MathsSky
Find it here: www.podbean.com/eas/pb-gwbmn...
October 8, 2025 at 8:48 AM
The people asked for a poem written by #Boethius, so I will provide a poem by Boethius. If you want to hear me read this, then check out this week's #TheMathematiciansPodcast for an episode of philosophy, theology and maths.
#TalkingMaths
#MathsSky
Find it here: www.podbean.com/eas/pb-gwbmn...
#TalkingMaths
#MathsSky
Find it here: www.podbean.com/eas/pb-gwbmn...
Just had a fantastic evening recording episode 6 of #Un-NaturalNumbers, the maths chat show. Really looking forward to it coming out next week
Here's a sneaky peak.
#mathsky
#talkingmaths
Here's a sneaky peak.
#mathsky
#talkingmaths
October 7, 2025 at 9:14 PM
Just had a fantastic evening recording episode 6 of #Un-NaturalNumbers, the maths chat show. Really looking forward to it coming out next week
Here's a sneaky peak.
#mathsky
#talkingmaths
Here's a sneaky peak.
#mathsky
#talkingmaths
Christmas Decs are already in the shops. Anyone want to play a game of "Reverse Mechanical Linkages"?
#Mathsky
#Mechanics
#Mathsky
#Mechanics
October 5, 2025 at 10:30 AM
Christmas Decs are already in the shops. Anyone want to play a game of "Reverse Mechanical Linkages"?
#Mathsky
#Mechanics
#Mathsky
#Mechanics
A contentious opinion:
A4 #origami is superior to square form, as you can connect two A4 sheets for a 41% larger di-tonal construction.
1:1 ratios can suck it
#mathsky
#mathsbuilds
A4 #origami is superior to square form, as you can connect two A4 sheets for a 41% larger di-tonal construction.
1:1 ratios can suck it
#mathsky
#mathsbuilds
October 5, 2025 at 9:53 AM
A contentious opinion:
A4 #origami is superior to square form, as you can connect two A4 sheets for a 41% larger di-tonal construction.
1:1 ratios can suck it
#mathsky
#mathsbuilds
A4 #origami is superior to square form, as you can connect two A4 sheets for a 41% larger di-tonal construction.
1:1 ratios can suck it
#mathsky
#mathsbuilds
At some point I need to stop pretending that I am teaching my daughter maths, and just admit that I like #Duplo
#mathschat
#mathstoys
#buildingmaths
#mathschat
#mathstoys
#buildingmaths
September 29, 2025 at 4:42 PM
At some point I need to stop pretending that I am teaching my daughter maths, and just admit that I like #Duplo
#mathschat
#mathstoys
#buildingmaths
#mathschat
#mathstoys
#buildingmaths
So, I'm thinking that Pappus of Alexandria is the first recorded bit of Mansplaining.
Here he is trying to tell the lecturer Pandrosion how to do geometry.
Sadly this is one of the only references to one of the 4 female Mathematicians before Hypatia. And it leads me to call him Papp-ass
#mathsky
Here he is trying to tell the lecturer Pandrosion how to do geometry.
Sadly this is one of the only references to one of the 4 female Mathematicians before Hypatia. And it leads me to call him Papp-ass
#mathsky
September 23, 2025 at 3:08 PM
So, I'm thinking that Pappus of Alexandria is the first recorded bit of Mansplaining.
Here he is trying to tell the lecturer Pandrosion how to do geometry.
Sadly this is one of the only references to one of the 4 female Mathematicians before Hypatia. And it leads me to call him Papp-ass
#mathsky
Here he is trying to tell the lecturer Pandrosion how to do geometry.
Sadly this is one of the only references to one of the 4 female Mathematicians before Hypatia. And it leads me to call him Papp-ass
#mathsky
Hey. Guess who very nearly has made it onto the front page of apple podcasts 'Mathematics' list. It's #TheMathematiciansPodcast.
Watch out @timharford.ft.com , I only need to get a few million more downloads weekly to steal top billing.
Admittedly this "more" is multiplicative not additive.
Watch out @timharford.ft.com , I only need to get a few million more downloads weekly to steal top billing.
Admittedly this "more" is multiplicative not additive.
September 7, 2025 at 6:45 PM
Hey. Guess who very nearly has made it onto the front page of apple podcasts 'Mathematics' list. It's #TheMathematiciansPodcast.
Watch out @timharford.ft.com , I only need to get a few million more downloads weekly to steal top billing.
Admittedly this "more" is multiplicative not additive.
Watch out @timharford.ft.com , I only need to get a few million more downloads weekly to steal top billing.
Admittedly this "more" is multiplicative not additive.
My mini-bag of skittles had 17 skittles in it with 4 colour options. AM I THE ONLY SANE PERSON LEFT IN THIS WORLD?!?
September 6, 2025 at 5:06 PM
My mini-bag of skittles had 17 skittles in it with 4 colour options. AM I THE ONLY SANE PERSON LEFT IN THIS WORLD?!?
If I say:
Any square (4*4 or 8*8) may be rotated by 90 degrees, if the pieces are fully enclosed in the square.
Is it possible to sort all the greens to the left and reds to the right?
#playmaths
#mathschat
#mathsky
Any square (4*4 or 8*8) may be rotated by 90 degrees, if the pieces are fully enclosed in the square.
Is it possible to sort all the greens to the left and reds to the right?
#playmaths
#mathschat
#mathsky
August 3, 2025 at 6:43 PM
If I say:
Any square (4*4 or 8*8) may be rotated by 90 degrees, if the pieces are fully enclosed in the square.
Is it possible to sort all the greens to the left and reds to the right?
#playmaths
#mathschat
#mathsky
Any square (4*4 or 8*8) may be rotated by 90 degrees, if the pieces are fully enclosed in the square.
Is it possible to sort all the greens to the left and reds to the right?
#playmaths
#mathschat
#mathsky
Here is my Duplo castle. Can anyone suggest some Duplo based maths that I can use to enhance my daughters play time?
#playmaths
#mathschat
#playmaths
#mathschat
August 3, 2025 at 6:12 PM
Here is my Duplo castle. Can anyone suggest some Duplo based maths that I can use to enhance my daughters play time?
#playmaths
#mathschat
#playmaths
#mathschat
August 2, 2025 at 3:30 PM
So I am camping with a second hand gas canister. I have not been told how full it is, or how many hours of cooking it should last.
I can hear a 'slosh' when I shake it.
What mathematical steps would you take to estimate how many kettles I can boil?
#talkmaths
#mathsky
I can hear a 'slosh' when I shake it.
What mathematical steps would you take to estimate how many kettles I can boil?
#talkmaths
#mathsky
July 12, 2025 at 6:42 AM
So I am camping with a second hand gas canister. I have not been told how full it is, or how many hours of cooking it should last.
I can hear a 'slosh' when I shake it.
What mathematical steps would you take to estimate how many kettles I can boil?
#talkmaths
#mathsky
I can hear a 'slosh' when I shake it.
What mathematical steps would you take to estimate how many kettles I can boil?
#talkmaths
#mathsky
Potential fact for episode 4 of #Un-NaturalNumbers .
I spent most of my final minutes before falling asleep last night trying to think of a 3 digit Harshad number.
This gives a deeper insight into the rule of divisibility by 3.
#mathstalk
#mathsky
I spent most of my final minutes before falling asleep last night trying to think of a 3 digit Harshad number.
This gives a deeper insight into the rule of divisibility by 3.
#mathstalk
#mathsky
July 7, 2025 at 9:01 AM
Potential fact for episode 4 of #Un-NaturalNumbers .
I spent most of my final minutes before falling asleep last night trying to think of a 3 digit Harshad number.
This gives a deeper insight into the rule of divisibility by 3.
#mathstalk
#mathsky
I spent most of my final minutes before falling asleep last night trying to think of a 3 digit Harshad number.
This gives a deeper insight into the rule of divisibility by 3.
#mathstalk
#mathsky
Holy smokes Batman.
And this just happened to be published in the month that I needed it.
And this just happened to be published in the month that I needed it.
July 1, 2025 at 7:22 PM
Holy smokes Batman.
And this just happened to be published in the month that I needed it.
And this just happened to be published in the month that I needed it.
Just brushing up on my knot theory ahead of #Un-NaturalNumbers the maths chat show all about numbers.
Tomorrow we record episode 3, on the number 3. And I am planning to talk on knot theory.
See if you can find the significance, and whilst you wait have a go at this
#mathstalk
#mathsky
Tomorrow we record episode 3, on the number 3. And I am planning to talk on knot theory.
See if you can find the significance, and whilst you wait have a go at this
#mathstalk
#mathsky
July 1, 2025 at 5:28 PM
Just brushing up on my knot theory ahead of #Un-NaturalNumbers the maths chat show all about numbers.
Tomorrow we record episode 3, on the number 3. And I am planning to talk on knot theory.
See if you can find the significance, and whilst you wait have a go at this
#mathstalk
#mathsky
Tomorrow we record episode 3, on the number 3. And I am planning to talk on knot theory.
See if you can find the significance, and whilst you wait have a go at this
#mathstalk
#mathsky
My #probability #starter for today's lesson:
If I roll 2 dice numbered (0,n) and place them next to each other, we can check if they are prime. But for what value 0
#alevelmaths
#mathsky
If I roll 2 dice numbered (0,n) and place them next to each other, we can check if they are prime. But for what value 0
#alevelmaths
#mathsky
July 1, 2025 at 8:20 AM
My #probability #starter for today's lesson:
If I roll 2 dice numbered (0,n) and place them next to each other, we can check if they are prime. But for what value 0
#alevelmaths
#mathsky
If I roll 2 dice numbered (0,n) and place them next to each other, we can check if they are prime. But for what value 0
#alevelmaths
#mathsky
I just downloaded my own pdf of The Principia, this has given me a curious feeling, like reading a religious text. Below is B 1, S 5, L 17: where I will be making the case that Newton is citing Apollonius for his work on Conics.
Free copy: web.math.princeton.edu/~eprywes/F22...
#mathsky
#mathstalk
Free copy: web.math.princeton.edu/~eprywes/F22...
#mathsky
#mathstalk
July 1, 2025 at 7:45 AM
I just downloaded my own pdf of The Principia, this has given me a curious feeling, like reading a religious text. Below is B 1, S 5, L 17: where I will be making the case that Newton is citing Apollonius for his work on Conics.
Free copy: web.math.princeton.edu/~eprywes/F22...
#mathsky
#mathstalk
Free copy: web.math.princeton.edu/~eprywes/F22...
#mathsky
#mathstalk
One of my favourites of my daughter's toys.
10 points to the first person who can do me a "Maths" of this.
#mathsart
#mathart
#mathschat
#accidentalmaths
10 points to the first person who can do me a "Maths" of this.
#mathsart
#mathart
#mathschat
#accidentalmaths
June 30, 2025 at 6:44 PM
One of my favourites of my daughter's toys.
10 points to the first person who can do me a "Maths" of this.
#mathsart
#mathart
#mathschat
#accidentalmaths
10 points to the first person who can do me a "Maths" of this.
#mathsart
#mathart
#mathschat
#accidentalmaths
