I love talking about maths. Please get in touch (r [dot] elwes [at] gmail [dot] com) if you would like me to come and speak to your school or club. The sessions I currently offer include:

**Knot Theory**interactive masterclass – I have versions of this suitable for beginners and for more advanced (e.g. A-level) students.**Nim and Nimbers**– an interactive masterclass on game theory and mathematical strategy, suitable for audiences of all ages.**Unpicking Pick’s Theorem**– an interactive masterclass (ideally requiring computer access for all students, working in pairs) about Pick’s theorem.**The Maths that Makes the Modern World**– a talk, suitable for A-level students, about some of the mathematics behind industry and the internet.**Infinity and the Limits of Maths**– a talk, suitable for A-level students, about infinity and the continuum hypothesis.**The Science of Geometry and the Art of Optimisation**– a talk, suitable for GCSE students, about the mathematics of optimisation.**The Platonic Solids’ Lesser Known Cousins**– a talk, suitable for all ages, about the the weird wide world of polyhedra.- I have various talks suitable for mixed mathematical audiences (e.g. undergraduate maths societies).

## Selected Public Appearances

*For more technical presentations, see below.*

• Public Lecture on *The unreasonable effectiveness of logic on *18th September 2018 at the* International Centre for Mathematical Sciences* in Edinburgh as part of the conference From permutation groups to model theory: a workshop inspired by the interests of Dugald Macpherson, on the occasion of his 60th birthday

• Talk at ESOF (European Science Open Forum, 26th July 2016) on *Exploring the Turing Myth*, jointly with mathematician Roberto Natalini, playwright & director Maria Elisabetta Marelli, science writer Francesca Riccioni, and cartoonist Tuono Pettinato.

• Three talks at the Training Partnership at the UCL institute of Education, on 25^{th} November 2015, 15^{th} December 2015, and 3^{rd} March 2016.

• Royal Institution Scottish Mathematics Masterclass Day at Edinburgh University (June 2015), on *Nim and Nimbers*

• *Institute of Mathematics and its Applications* Seminar (December 2013) at University of Central Lancashire.

• Interview with Neil Denny on Little Atoms on Resonance FM (December 2010). MP3 here.

### Other General Talks

• 2011-2020, workshops on *Knot Maths* to school-students aged 13-14 as part of the Royal Institution Mathematics Masterclasses in Leeds. Handout here [pdf].

• 2009-2018, Knot Theory masterclass to A-level students at Leeds Festival of Science and/or Leeds University’s Reach For Excellence Summer-schools.

• 2019-20, A workshop on Pick’s Theorem for sixth-formers, at Leeds Festival of Science and/or Leeds University’s Reach For Excellence Summer-schools. (Previously given jointly with Matt Daws in 2013).

• I regularly give talks and masterclasses on various aspects of mathematics (including prime numbers, tessellations, infinity, knot theory, waves) at schools around Yorkshire.

• *Mathematical Exploration into Logical Algebra*, University of Leeds, 29th November 2018.

• Talk for the Yorkshire Branch of the Mathematics Association on *The Platonic Solids Lesser Known Cousins*, 20th October 2018

• Café Scientifique talk (May 2015) in Headingley (Leeds), on *The Science of Geometry and the Art of Optimisation*

• University of the Third Age talk (June 2019) in Bury, on *The Algorithm That Rules The World*

• University of York Mathematics Society talk (April 2014) on *Gödel, Incompleteness, and Unprovable Theorems*

• WP Milne lecture at Leeds Festival of Science (March 2013) on *The Maths that Makes the Modern World*.

• Maths Excursion talk at Leeds University on the topic of Pick’s Theorem and Ehrhart Polynomials (February 2012). Slides here [pdf].

• Maths Special edition of The Guardian’s *Science Weekly* podcast, along with Ian Stewart and Brian Cox, and hosted by Alok Jha (March 2011). MP3 here.

• Interview with Dan Damon on *World Update* on the BBC World Service, about unprovability and set theory (November 2010). MP3 here.

• Talk at the West Yorkshire Astronomical Society, about Infinity and Hugh Woodin’s Ultimate L (November 2011).

• Talk at PhilSoc in Manchester, to an audience of students from three Manchester schools (September 2011), about *Infinity and the Limits of Mathematics*.

• Webinar on “Some families of polyhedra” at Mathfuture, hosted by Maria Droujkova (May 2011).

• October 2007, talk about *e* and transcendental numbers at Café Scientifique in Chapel Allerton, Leeds.

• In February 2007, interviewed on Channel 4’s radio show *The Tube*, discussing Goldbach’s Conjecture with Alex James (of *Blur* fame) in front of an audience of screaming teenage rock fans. (Write-up here.)

### Research Presentations

• Landscape Colloquium on *Concrete Incompleteness*, University of Bath, 23rd November 2018

• Research Seminar on *Schelling models in mathematics, social science, physics, and computer science*, Microsoft Labs (Boston, USA), 7th December 2016

• Workshop on the Model Theory of Finite & Pseudofinite Structures, University of Leeds, 29th July 2016

• Model Theory Seminar, University of Leeds, 5th July 2016

• Model Theory Seminar, University of Leeds, 16th June 2015

• Model Theory Seminar, University of Leeds, 2nd December 2014

• Mathematics Seminar, University of Essex, 24th April 2014

• Interdisciplinary Seminar, University of Essex, 24th April 2014

• LAND (Leeds Applied Non-linear Dynamics) Seminar, University of Leeds, 22nd October 2013

• Logic Seminar, University of Leeds, 20th October 2010, on *Concrete Incompleteness.* Slides and blogpost here.

• Mathematical Logic Seminar, Université de Lyon, 18th May 2006

• Graduiertenkolleg Mathematische Logik und Anwendungen, Albert-Ludwigs Universität, Freiburg, 8th May 2006

• Workshop On Finite Models, Université de Paris VII, 27th March 2006

• Workshop On Finite And Algorithmic Model Theory, University of Durham, 9-13th January 2006

• Mathematical Logic Seminar, University of Oxford, 18th November 2005

• Mathematical Logic Seminar, University of Leeds, 26th January 2005

• British Mathematical Colloquium, Queen’s University Belfast, 5-8th April, 2004

### Commendations

#### Talking Maths on* The Tube*

“Dr Elwes was a total dude. He looked like he could have been in one of the bands we had on.” – Alex James, in *The Independent*

*Little Atoms*

“great… really engaging look at the fundamentals of maths for a relatively lay listener.” – Michael Marshall, presenter of Strange Quarks and Skeptics with a K