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2019-12-17
Rishabh, what do you see that I do not?
Rob Glencairn
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/blog/70
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Chalkdust issue 17
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Approximating π
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Happy -62+e+gτ-√3 Approximation Day!
May 2020
A surprising fact about quadrilaterals
Interesting tautologies
Mar 2020
Log-scaled axes
Feb 2020
PhD thesis, chapter ∞
PhD thesis, chapter 5
PhD thesis, chapter 4
PhD thesis, chapter 3
Inverting a matrix
PhD thesis, chapter 2
Jan 2020
PhD thesis, chapter 1
Gaussian elimination
Matrix multiplication
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2019
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Dec 2019
Visualising MENACE's learning
Christmas card 2019
Nov 2019
Christmas (2019) is coming!
Sep 2019
A non-converging LaTeX document
TMiP 2019 treasure punt
Jul 2019
Big Internet Math-Off stickers 2019
Jun 2019
Proving a conjecture
Apr 2019
Harriss and other spirals
Mar 2019
realhats
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2018
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Christmas cross stitch
MENACE in fiction
Christmas card 2018
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Christmas (2018) is coming!
Sep 2018
Runge's Phenomenon
Jul 2018
World Cup stickers 2018, pt. 3
Mathsteroids
Jun 2018
World Cup stickers 2018, pt. 2
May 2018
A bad Puzzle for Today
Apr 2018
Building MENACEs for other games
Mar 2018
A 20,000-to-1 baby?
World Cup stickers 2018
Jan 2018
Origins of World War I
Christmas (2017) is over
2017
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Christmas card 2017
Nov 2017
Christmas (2017) is coming!
MENACE at Manchester Science Festival
Jun 2017
Big Ben Strikes Again
Mar 2017
The end of coins of constant width
Dragon curves II
Feb 2017
The importance of estimation error
Jan 2017
Is MEDUSA the new BODMAS?
2016
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Christmas (2016) is over
Video game surfaces
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Nov 2016
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Oct 2016
Logical contradictions
Palindromic dates
Sep 2016
Tube map kaleidocycles
Jul 2016
Solving the cross diagonal cover problem
Jun 2016
Braiding, pt. 2
Braiding, pt. 1
Making names in Life
May 2016
Euro 2016 stickers
Mar 2016
Proving Pythagoras' theorem
Dragon curves
The
Mathematical Games
of Martin Gardner
Jan 2016
Christmas (2015) is over
2015
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Oct 2015
How to kick a conversion
How much will I win on the new National Lottery?
Aug 2015
How OEISbot works
MENACE
Mar 2015
Optimal Pac-Man
Tube map stellated rhombicuboctahedron
Logic bot, pt. 2
Design your own flexagon
Jan 2015
Tube map Platonic solids, pt. 3
2014
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Logic bot
Sep 2014
Electromagnetic Field talk
Jun 2014
Tennis maths
May 2014
World Cup stickers
Apr 2014
Countdown probability, pt. 2
Countdown probability
Mar 2014
New machine unfriendly £1 coin, pt. 2
New machine unfriendly £1 coin
2013
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Dec 2013
Assorted christmaths
Pointless probability
Jul 2013
"Uncanny" royal coincidence
Raspberry Pi weather station
2012
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Nov 2012
Tube map Platonic solids, pt. 2
Oct 2012
Tube map Platonic solids
Tags
martin gardner
edinburgh
final fantasy
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guest posts
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gaussian elimination
graphs
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the aperiodical
determinants
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hats
countdown
geometry
golden ratio
sound
dataset
boundary element methods
sobolev spaces
people maths
london
hannah fry
bots
chalkdust magazine
hyperbolic surfaces
signorini conditions
newcastle
chebyshev
realhats
computational complexity
regular expressions
gerry anderson
24 hour maths
captain scarlet
zines
estimation
ucl
go
rugby
inline code
stirling numbers
logs
chess
bodmas
rhombicuboctahedron
platonic solids
geogebra
kenilworth
statistics
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plastic ratio
folding tube maps
pizza cutting
crosswords
electromagnetic field
news
bubble bobble
phd
coins
crossnumber
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frobel
weak imposition
reddit
php
christmas
mathsteroids
fractals
dates
crossnumbers
runge's phenomenon
python
misleading statistics
london underground
gather town
warwick
sport
tennis
flexagons
matt parker
interpolation
national lottery
dinosaurs
wave scattering
speed
dragon curves
ternary
pythagoras
noughts and crosses
recursion
accuracy
talking maths in public
map projections
cambridge
finite group
squares
numbers
game show probability
light
thirteen
menace
a gamut of games
pi approximation day
convergence
numerical analysis
puzzles
preconditioning
pac-man
pokémon wordle
error bars
royal institution
partridge puzzle
books
world cup
christmas card
harriss spiral
latex
quadrilaterals
wool
folding paper
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braiding
mathslogicbot
oeis
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wordle
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curvature
friendly squares
video games
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Archive
Show me a random blog post
▼ show ▼
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2026
May 2026
World Cup stickers 2026
Apr 2026
A new puzzle every day
Mixing Wordle with other games
Feb 2026
Christmas (2025) is over
2025
Dec 2025
Christmas card 2025
Nov 2025
Christmas (2025) is coming!
Sep 2025
The partridge puzzle
Aug 2025
TMiP 2025 puzzle hunt
Jun 2025
A nonogram alphabet
Mar 2025
How to write a crossnumber
Jan 2025
Christmas (2024) is over
Friendly squares
2024
Dec 2024
A regular expression Christmas puzzle
Christmas card 2024
Nov 2024
Christmas (2024) is coming!
Feb 2024
Zines, pt. 2
Jan 2024
Christmas (2023) is over
2023
▼ show ▼
▲ hide ▲
Dec 2023
Christmas card 2023
Nov 2023
Christmas (2023) is coming!
Zines
Sep 2023
TMiP 2023 puzzle hunt
May 2023
Chalkdust issue 17
Apr 2023
Logo Asteroids
Mar 2023
Mathsteroids on hyperbolic surfaces
Feb 2023
The databet
Jan 2023
Christmas (2022) is over
2022
▼ show ▼
▲ hide ▲
Dec 2022
Off-by-one errors
Christmas card 2022
Nov 2022
Christmas (2022) is coming!
Oct 2022
24 Hour Maths Game Show
Mar 2022
Approximating π
Feb 2022
Build your own MENACE
Jan 2022
Christmas (2021) is over
2021
▼ show ▼
▲ hide ▲
Dec 2021
Christmas card 2021
Nov 2021
Christmas (2021) is coming!
Sep 2021
TMiP 2021 puzzle hunt
May 2021
Close encounters of the second kind
Jan 2021
Christmas (2020) is over
2020
▼ show ▼
▲ hide ▲
Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -62+e+gτ-√3 Approximation Day!
May 2020
A surprising fact about quadrilaterals
Interesting tautologies
Mar 2020
Log-scaled axes
Feb 2020
PhD thesis, chapter ∞
PhD thesis, chapter 5
PhD thesis, chapter 4
PhD thesis, chapter 3
Inverting a matrix
PhD thesis, chapter 2
Jan 2020
PhD thesis, chapter 1
Gaussian elimination
Matrix multiplication
Christmas (2019) is over
2019
▼ show ▼
▲ hide ▲
Dec 2019
Visualising MENACE's learning
Christmas card 2019
Nov 2019
Christmas (2019) is coming!
Sep 2019
A non-converging LaTeX document
TMiP 2019 treasure punt
Jul 2019
Big Internet Math-Off stickers 2019
Jun 2019
Proving a conjecture
Apr 2019
Harriss and other spirals
Mar 2019
realhats
Jan 2019
Christmas (2018) is over
2018
▼ show ▼
▲ hide ▲
Dec 2018
Christmas cross stitch
MENACE in fiction
Christmas card 2018
Nov 2018
Christmas (2018) is coming!
Sep 2018
Runge's Phenomenon
Jul 2018
World Cup stickers 2018, pt. 3
Mathsteroids
Jun 2018
World Cup stickers 2018, pt. 2
May 2018
A bad Puzzle for Today
Apr 2018
Building MENACEs for other games
Mar 2018
A 20,000-to-1 baby?
World Cup stickers 2018
Jan 2018
Origins of World War I
Christmas (2017) is over
2017
▼ show ▼
▲ hide ▲
Dec 2017
Christmas card 2017
Nov 2017
Christmas (2017) is coming!
MENACE at Manchester Science Festival
Jun 2017
Big Ben Strikes Again
Mar 2017
The end of coins of constant width
Dragon curves II
Feb 2017
The importance of estimation error
Jan 2017
Is MEDUSA the new BODMAS?
2016
▼ show ▼
▲ hide ▲
Dec 2016
Christmas (2016) is over
Video game surfaces
Christmas card 2016
Nov 2016
Christmas (2016) is coming!
Oct 2016
Logical contradictions
Palindromic dates
Sep 2016
Tube map kaleidocycles
Jul 2016
Solving the cross diagonal cover problem
Jun 2016
Braiding, pt. 2
Braiding, pt. 1
Making names in Life
May 2016
Euro 2016 stickers
Mar 2016
Proving Pythagoras' theorem
Dragon curves
The
Mathematical Games
of Martin Gardner
Jan 2016
Christmas (2015) is over
2015
▼ show ▼
▲ hide ▲
Nov 2015
Christmas (2015) is coming!
Oct 2015
How to kick a conversion
How much will I win on the new National Lottery?
Aug 2015
How OEISbot works
MENACE
Mar 2015
Optimal Pac-Man
Tube map stellated rhombicuboctahedron
Logic bot, pt. 2
Design your own flexagon
Jan 2015
Tube map Platonic solids, pt. 3
2014
▼ show ▼
▲ hide ▲
Nov 2014
Logic bot
Sep 2014
Electromagnetic Field talk
Jun 2014
Tennis maths
May 2014
World Cup stickers
Apr 2014
Countdown probability, pt. 2
Countdown probability
Mar 2014
New machine unfriendly £1 coin, pt. 2
New machine unfriendly £1 coin
2013
▼ show ▼
▲ hide ▲
Dec 2013
Assorted christmaths
Pointless probability
Jul 2013
"Uncanny" royal coincidence
Raspberry Pi weather station
2012
▼ show ▼
▲ hide ▲
Nov 2012
Tube map Platonic solids, pt. 2
Oct 2012
Tube map Platonic solids
Tags
arithmetic
chalkdust magazine
pizza cutting
game show probability
oeis
manchester science festival
braiding
pi approximation day
triangles
propositional calculus
folding tube maps
24 hour maths
folding paper
books
finite group
chess
a gamut of games
hexapawn
hannah fry
hyperbolic surfaces
standard deviation
football
interpolation
probability
fractals
matt parker
logo
menace
matrix multiplication
royal institution
trigonometry
go
world cup
mean
hats
data visualisation
draughts
squares
binary
kenilworth
bluesky
signorini conditions
geometry
big internet math-off
pascal's triangle
polynomials
turtles
coins
cross stitch
wordle
data
harriss spiral
boundary element methods
crossnumbers
accuracy
flexagons
gerry anderson
quadrilaterals
convergence
rhombicuboctahedron
palindromes
regular expressions
numerical analysis
raspberry pi
game of life
mathslogicbot
stirling numbers
dataset
latex
puzzles
speed
sorting
light
matrix of cofactors
fence posts
live stream
reuleaux polygons
graphs
crochet
correlation
graph theory
bempp
captain scarlet
dates
dinosaurs
databet
rugby
london
simultaneous equations
thirteen
manchester
tennis
friendly squares
youtube
programming
wool
national lottery
javascript
python
coventry
tetris
chebyshev
mathsteroids
nine men's morris
recursion
talking maths in public
errors
estimation
statistics
radio 4
newcastle
noughts and crosses
nonograms
curvature
stickers
reddit
preconditioning
logic
map projections
approximation
partridge puzzle
royal baby
arrangement puzzles
geogebra
weather station
machine learning
pythagoras
inline code
gather town
bodmas
datasaurus dozen
games
tmip
the aperiodical
christmas
news
platonic solids
php
inverse matrices
bubble bobble
sobolev spaces
wave scattering
martin gardner
pi
crosswords
mathsjam
misleading statistics
matrices
kings
error bars
exponential growth
edinburgh
realhats
determinants
runge's phenomenon
cambridge
warwick
fonts
finite element method
dragon curves
christmas card
sound
rust
countdown
zines
golden ratio
alphabets
final fantasy
european cup
sport
people maths
pokémon wordle
ternary
pac-man
pokémon
numbers
golden spiral
craft
ucl
gaussian elimination
london underground
matrix of minors
logs
computational complexity
guest posts
plastic ratio
weak imposition
video games
asteroids
electromagnetic field
bots
advent calendar
frobel
anscombe's quartet
crossnumber
phd
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on /blog/70