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WM
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Raw
WM
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Here are this year's
talk data for 2021

SATURDAY

SESSION
submissions. This ordering is provisional and may be subject to change.

SATURDAY

SESSION
1 : 14:00

Speaker
14:00 - 14:40

* Speaker
: Alistair Bird
Title : The Princess is in another Castle
Abstract : My quixotic quest to track down the seemingly shifting origins
Colin and variants of the “Princess in a Castle” logic problem.

Speaker
others
* Title
: Welcome to MathsJam 2021
* Abstract : Welcome, setting the scene, and generally getting underway

* Speaker : B -
Phil Ramsden
Title
Ramsden
* Title
: Thought You Were Clever When You Lit The Fuse
Abstract
Fuse
* Abstract
: You have an unlimited collection of fuses, each of which burns for one hour if lit at one end, and half an hour if lit at both ends at once. Using two fuses, can you time 3/4 of an hour? Using as many fuses as you like, can you time 5/4 of an hour? What durations can you time using your fuses, and what can't be timed in this way? And what has this got to do with the logical foundations of Mathematics?

Speaker
Mathematics?

* Speaker
: Richard Boland
Title
C - Ben Sparks
* Title
: Generalized Pentagonal Number Theorem
Abstract
The Cake and the Candles
* Abstract
: A generalization of Euler's pentagonal number theorem defines a modular structure over partitions which extends naturally to overpartitions puzzle with multiple solution methods, and higher order 'more-overpartitions' functions for which a combinatorial explanation is an open problem. A triangle for partitions/overpartitions isomorphic to Pascal's triangle is presented and for which sums of coefficients on lines of a given slope provide a one-to-one correspondence between the mod-restricted partitions and mod-restricted Fibonacci numbers.

Speaker
musings arising.

* Speaker
: D - Sam Hartburn
Title
Hartburn
* Title
: Extreme String Art (Without the String)
Abstract
String)
* Abstract
: You can make lovely string art by using straight lines to join equally-spaced points on a circle. But why stick to a circle? By changing the initial curve (and using a lot of lines) you can generate a plethora of beautiful designs.

Speaker
designs.

* Speaker
: E - Laurence O'Toole
Title
O'Toole
* Title
: Predicting Groupthink 2 - A Magic Trick
Abstract
Trick
* Abstract
: If everybody in a group has a completely free choice of number, is the result always the same?

SESSION
same?

Break 14:40 - 15:10

Actual Break 15:10 - 15:30

SESSION
2 : 15:30

Speaker
15:30 - 16:10

* Speaker
: A - Alexander Bolton
Title
Bolton
* Title
: The Longest Chess Game?
Abstract
Game?
* Abstract
: The World Chess Federation has some rules to prevent games from going on forever. I will outline a proposal by Tom Murphy VII for the longest possible legal chess game, and show the Twitter bot that I made to celebrate this achievement.

Speaker
achievement.

* Speaker
: B - Philipp Reinhard
Title
Reinhard
* Title
: Disturbing Mandelbrot
Abstract
Mandelbrot
* Abstract
: We'll explore what happens if we play around with the definition of the Mandelbrot set. There will be lots of pictures and animations. And the Riemann zeta function will make an appearance.

Speaker


* Speaker
: C - Sophie Maclean
Title
Maclean
* Title
: MathsJam and Mental Health
Abstract
Health
* Abstract
: This will be different to most talks in that it will contain no Maths. Instead I want to take this opportunity to start a conversation about mental health in Maths and thank the many members of the MathsJam community who helped me in my recovery from mental illness (CW: Mental Illness, Hospitals)

Speaker


* Speaker
: D - Cesco Reale
Title
Reale
* Title
: Online World Championship of Abstract Games for Nations
Abstract
Nations
* Abstract
: I will present the Mochalunt, Online World Championship of Abstract Games for Nations, that will start probably in January: definition of abstract games, spirit and structure of the tournament, questions.

Speaker
questions. Link to their web page: https://www.abstrakta.info/mochalunt.html

* Speaker
: E - Gavan Fantom
Title
Fantom
* Title
: Fast Inverse Square Root
Abstract
Root
* Abstract
: The Fast Inverse Square Root is a notorious algorithm for quickly approximating the reciprocal of a square root which is both simple and impenetrable in equal measure. Find out what it is, why it exists, and develop a mathematical intuition for why the f(...) it works.

Speaker
works.

* Speaker
: F - Johnny Ball
Title
Ball
* Title
: How to draw a Perfect Egg Shape using a Pentagon and Pentagram.
Abstract
Pentagram.
* Abstract
: We have here a Pentagon with a Pentagram inside it. The Pentagram was the Symbol or badge of the Pythagorean's. It is fascinating because longer and shorter lines are always in Golden Ratio to each other. By adding just three lines to the diagram, you have all you need, with a pair of compasses, to draw a perfect Egg. With compasses, form four curves and the Perfect Egg is achieved. Test it by holding a hens egg against it and see how the curves match. So the bottom wider end of a Hen's Egg is an almost perfect semi or half sphere. Now, when a hen lays an egg, which end appears first? It is this wide semi spherical end. Ouch.

SESSION 3: 16:50

Speaker



Break 16:10 - 16:40

Actual Break 16:40 - 16:50

SESSION 3 16:50 - 17:40

* Speaker
: Saturday Night Tables
* Title : Elevator Pitches for Saturday Night Tables activities
* Abstract : The organisers of Saturday Night tables activities (taking place 8-9pm) will have a chance to explain/describe what they'll be doing.

* Speaker : A -
Katie Steckles
Title
Steckles
* Title
: A Fun Integer Sequence
Abstract

* Abstract
: A famous integer sequence in recreational maths starts 1, 11, 21, 1211, 111221, ... Katie will talk about this sequence, set some related puzzles, and explain why she's recently been inspired to talk about it.

Speaker
it.

* Speaker
: B - Goran Newsum
Title
Newsum
* Title
: Quadrilateral is a misnomer
Abstract
misnomer
* Abstract
: Why do most shape names follow a pattern apart but four and three sided shapes don't?

Speaker
don't?

* Speaker
: Ben Sparks
Title : The Cake and the Candles
Abstract : A puzzle with multiple solution methods, and musings arising.

Speaker : Alexandre Muñiz
Title : Shaker Dice and Edge Labelings
Abstract : Shaker dice have a channel where balls fall, and numbers on the channel can be read off to determine the result. Finding useful numberings takes us into graph edge labeling.

Speaker :
E - Nancy Blachman
Title
Blachman
* Title
: COVID Misinformation Spreads because Many Don’t Understand Maths
Abstract
Maths
* Abstract
: Until recently, the general public could get by without understanding probability and statistics. But that changed with COVID-19. Now hundreds of thousands of people haven’t gotten vaccinated and are dying because they don’t understand what they hear or read and social media spreads misinformation rapidly.

SUNDAY

SESSION
rapidly.

* Speaker : D - Alexandre Muñiz
* Title : Shaker Dice and Edge Labelings
* Abstract : Shaker dice have a channel where balls fall, and numbers on the channel can be read off to determine the result. Finding useful numberings takes us into graph edge labeling.

* Speaker : F - Simon Bexfield
* Title : 3D Printed Objects
* Abstract : A demonstration of some 3D printed mathematical shapes, including a Menger sponge and dissections of polyhedra.

Break 17:40 - 18:10

Saturday Night Tables 8pm-9pm

SUNDAY

SESSION
4 : 09:30

Speaker
09:30 - 10:10

* Speaker
: A - Christian Lawson-Perfect
Title
Lawson-Perfect
* Title
: Each Edge Peach Pear Plum
Abstract
Plum
* Abstract
: I've made another baby, so it's time for another talk about baby maths. Each Peach Pear Plum is a classic picture book for babies, with a beautifully simple rhyming scheme. But I've always wished it was more complete. Join me for an Eulerian tour through fantasy land!

Speaker


* Speaker
: B - Belgin Seymenoglu
Title
Seymenoglu
* Title
: Zoombinis
Abstract
Zoombinis
* Abstract
: Belgin plays the remake of a 90s game that teaches mathematical thinking without any equations.

Speaker
equations.

* Speaker
: C - James Arthur
Title
Arthur
* Title
: Running Around in Circles
Abstract
Circles
* Abstract
: Every week I run an event called parkrun, we go around and around in circles and everytime somebody shouts out how many laps we have done. Any loop in can have a similar mapping to numbers. Let's explore this briefly.

Speaker
briefly.

* Speaker
: D - Matt Peperell
Title
Peperell
* Title
: A set of strange notation systems for sequences of permutations
Abstract
permutations
* Abstract
: A certain subset of people, who may or may not be mathematicians, care about permutations and sequences thereof. How can we describe these, and how can we easily commit them to memory?

Speaker
memory?

* Speaker
: E - Adam Atkinson
Title
Atkinson
* Title
: Is (one of the) biggest always best?
Abstract
best?
* Abstract
: My victims in Pisa often make life needlessly hard for themselves. Multiple times, they have decided that a straightforwardish problem is actually an unsolved problem from a Richard Guy book. I will talk about the unsolved problem.

Speaker
problem.

* Speaker
: F - Daniel Santos
Title
Santos
* Title
: The Sun Numerical System
Abstract
System
* Abstract
: This talk is going to introduce you to some concepts of numerical systems and Daniel is going to talk how some of the features of the Decimal system give confusion and misunderstandings and complexity in Daniel's point of view. A new numerical system without this problems is going to be explained and introduced by the name of Sun Numerical System (or Neonal).

SESSION
Neonal).


Break 10:10 - 10:50

Actual Break 10:50 - 11:05


SESSION
5 : 11:05

Speaker
11:05 - 11:45

* Speaker
: A - Alison Kiddle
Title
Kiddle
* Title
: On Half-Lives and Happiness
Abstract
Happiness
* Abstract
: This talk is all about half-lives and how they can affect your mood.

Speaker


* Speaker
: C - Tony Mann
* Title : The "Sleeping Beauty" Paradox
* Abstract : I'll outline the "Sleeping Beauty" problem (which has led to over 100 articles in philosophical journals).

* Speaker : B -
Francis Hunt
Title
Hunt
* Title
: Flexagons for Year 8
Abstract
8
* Abstract
: My employer has just started running some maths clubs for year 8 students. So this talk will just tell or remind you what trihexaflexagons and hexaflexagons are and how to make them, and note the 3 most common problems school students encounter when making them; also you're welcome to the slides and templates (pdf/LaTeX) I used.

Speaker
used.

* Speaker
: Tony Mann
Title
D - Alistair Bird
* Title
: The "Sleeping Beauty" Paradox
Abstract : I'll outline the "Sleeping Beauty" problem (which has led to over 100 articles
Princess is in philosophical journals).

Speaker
another Castle
* Abstract
: My quixotic quest to track down the seemingly shifting origins and variants of the “Princess in a Castle” logic problem.

* Speaker : E -
Colin Wright
Title
Wright
* Title
: Coincidences and Lovely Things in Maths
Abstract
Maths
* Abstract
: A list of lovely things in maths maths

* Speaker : Colin and others
* Title : Competition Results and wrap-up
* Abstract : The winners of the competitions (at various levels) will be announced, and any final announcements made.

Break 11:45 - 12:10

Lunch!