Wed, 17 Jun 2026
14:00
N3.12

Mathematrix: End of term crafts

Abstract

Take a break at the end of term with some Mathematrix crafts and sweet treats! Supplies for watercolor and origami will be provided, and you are welcome to bring your own crafts. 

Tue, 12 May 2026
12:00
N3.12

Mathematrix: International Women in Mathematics Day

Abstract

Everyone is invited to celebrate International Women in Mathematics Day with a pizza lunch! We will be watching ‘Journeys of Women in Mathematics’, a powerful 20-minute film by the International Mathematical Union showcasing the experiences of women mathematicians worldwide. It follows three mathematicians from India, Cameroon, and Brazil from their home institutions to the (WM)² international meeting, showing their research and what it’s like to be part of the global maths community.

Wed, 11 Mar 2026
14:30
N3.12

Maths Institute EDI with Arham Farid

Arham Farid
((Mathematical Institute University of Oxford))
Abstract

Arham Farid (MI EDI Officer) will join us to chat about current EDI initiatives and to hear our thoughts about ways EDI can improve in the Maths Institute.

Wed, 11 Feb 2026
14:30
N3.12

Book Club: x+y

Abstract

Join us to discuss x+y: A Mathematician’s Manifesto for Rethinking Gender by Eugenia Cheng.

Wed, 19 Nov 2025
14:30
N3.12

Mathematrix Book Club

(Mathematrix)
Abstract

A discussion on how race and ethnicity interact with the concept of merit in academia, based on sections from the book 'Misconceiving Merit' by Blair-Loy and Cech. 

Wed, 05 Nov 2025

14:30 - 15:30
N3.12

Mathematrix: Crafts and Cakes

(Mathematrix)
Abstract

Come take a break and get to know other Mathematrix members over some crafts! All supplies and sweet treats provided.

Wed, 22 Oct 2025

14:30 - 15:30
N3.12

Mathematrix Book Club

(Mathematrix)
Abstract

Join us for the inaugural session of Mathematrix book club! Have you heard that office workplaces often have the thermostat set at a temperature that is too cold for women to work comfortably? This month we will be discussing the academic articles behind concepts that often come up in conversations about gender inequality in the workplace. The goal of book club is to develop an evidence-based understanding of diversity in mathematics and academia. 

 

Fri, 14 Mar 2025
15:30
N3.12

Chiral worldsheet model for pure N=4 Super Yang-Mills

Sean Seet
(University of Edinburgh)
Abstract
It is a remarkable fact (first observed by Witten in 2004) that holomorphic curves in twistor space underpin scattering amplitude calculations in N=4 Super Yang-Mills, spurring decades of work on twistor actions. The explicit realisation of this fact from a twistor string calculation, however, is somewhat marred by the presence of non-Yang-Mills (N=4 conformal supergravity) intermediates present even in tree level calculations. This pathology first appears as the presence of multi-trace terms even at tree level, indicating the exchange of non Yang-Mills intermediates.
 
In this talk we present a new chiral worldsheet model (2504.xxxx) that is free from non-Yang-Mills intermediates and computes N=4 super Yang-Mills amplitudes at tree and loop level (with some caveats). The main contribution is the removal of the non-Yang-Mills intermediates and a simple prescription for computing higher genus correlators.
 
Thu, 06 Mar 2025
13:00
N3.12

Abstract Lego - building 5d SCFTs from M-theory on Calabi-Yau threefolds

Oscar Lewis
Abstract

Placing M-theory on a non-compact Calabi-Yau threefold allows us to construct low energy field theories in 5d with minimal supersymmetry, in a limit in which gravity is decoupled.  We venture into this topic by introducing all the building blocks we hope to capture in a 5d SCFT. Next, from the geometric perspective we realise the 5d gauge theory data from the objects within the Calabi-Yau geometry, given by curves, divisors, rulings, and singularities. After seeing how the geometry captures all the possible field theory data, we illustrate how to build some simple 5d SCFTs by placing M-theory on toric Calabi-Yau threefolds.

 

Junior Strings is a seminar series where DPhil students present topics of common interest that do not necessarily overlap with their own research area. This is primarily aimed at PhD students and post-docs but everyone is welcome.

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