The ACM-W Chairs
Rendering History: The Women of ACM-W
91-136
(08 Apr 2024)
Big Green Lunch, Friday 13 June
Roast Cauliflower & Chickpea Korma (v) and Vegan Keema (ve). Served with pilau rice, vegetable samosa, garlic & coriander naan, and raita - all for only £5.95. Bring your own container and get 20p off your meal.
Image: Joachim Beuckelaer (possibly) - The Vegetable Seller
S-algebra in Gauge Theory: Twistor, Spacetime and Holographic
Perspectives
Kmec, A
Mason, L
Ruzziconi, R
Sharma, A
(02 Jun 2025)
http://arxiv.org/abs/2506.01888v1
Perspectives
A homogenised model for dispersive transport and sorption in a heterogeneous porous medium
Auton, L
Dalwadi, M
Griffiths, I
SIAM Journal on Applied Mathematics
Fri, 06 Jun 2025
13:00
13:00
L5
Topologically good cover from gradient descent
Uzu Lim
(Queen Mary University London)
Note: we would recommend to join the meeting using the Teams client for best user experience.
Abstract
The cover of a dataset is a fundamental concept in computational geometry and topology. In TDA (topological data analysis), it is especially used in computing persistent homology and data visualisation using Mapper. However only rudimentary methods have been used to compute a cover. In this talk, we formulate the cover computation problem as a general optimisation problem with a well-defined loss function, and use gradient descent to solve it. The resulting algorithm, ShapeDiscover, substantially improves quality of topological inference and data visualisation. We also show some preliminary applications in scRNA-seq transcriptomics and the topology of grid cells in the rats' brain. This is a joint work with Luis Scoccola and Heather Harrington.
Qdot, an Oxford spin-out based at Oxford Airport, are working towards the dream of clean, sustainable flight and they are recruiting a Numerical Methods Engineer to take a central role in developing numerical models and simulation tools to solve complex physical problems.
Image: Joseph Mallord William Turner - Steam-Boat off a Harbour’s Mouth
The Anomalous Mathematical Patterns Sci-Art competition invites you all to vote for the People’s Choice Prize artwork.
RTSMS: randomized Tucker with single-mode sketching
Hashemi, B
Nakatsukasa, Y
Electronic Transactions on Numerical Analysis
We hold a weekly seminar series during Michaelmas Term where we invite speakers from the financial industry to give presentations to our MSc class. Examples of companies in 2022 include: Nomura, Citadel Securities, NatWest Markets, J.P. Morgan, Qube Research & Technologies, and Deutsche Bank. Many of the companies also hold networking events for our MSc class, which is a good opportunity for students to discuss job and internship opportunities in finance.