Recurrence relations and the Christoffel–Darboux formula for a special class of elliptic orthogonal polynomials
 Desiraju, H Lahiry, S Journal of Physics A: Mathematical and Theoretical volume 59 issue 23 235203 (10 Jun 2026) doi:10.1088/1751-8121/ae7227
Tu1437 DEFINING THE CELLULAR BASIS OF ACUTE SEVERE ULCERATIVE COLITIS
 Pakpoor, J Dooley, K Agarwal, D Pledger, S Fergusson, J Cripps, S Coles, M Satsangi, J Klenerman, P Powrie, F Uhlig, H Walsh, A Brain, O Friedrich, M Dendrou, C Travis, S Buckley, C Gastrointestinal Endoscopy volume 103 issue 5 s-1246-s-1247 (May 2026) doi:10.1016/s0016-5107(26)03056-7
Modeling flying formations as flow-mediated matter
 Mavroyiakoumou, C Wu, J Ristroph, L Physical Review Fluids volume 11 issue 6 (18 Jun 2026) doi:10.1103/tp8s-76vr
Thu, 05 Nov 2026

14:00 - 15:00
Lecture Room 3

Adaptive Sampling and Regularization for Stochastic Trust-region Methods

Professor Sara Shashaani
(North Carolina State University)
Abstract

Professor Sara Shashaani is going to talk about: 'Adaptive Sampling and Regularization for Stochastic Trust-region Methods'

Trust-region methods have proven highly effective for unconstrained nonconvex stochastic optimization problems where objective and gradient information are available only through noisy stochastic oracles. ASTRO is a class of adaptive sampling trust-region methods that dynamically determine sampling effort while constructing local quadratic models from noisy function and gradient observations. By exploiting dependence among samples and the stochastic structure of the problem, ASTRO achieves strong convergence and complexity guarantees. Its derivative-free variant, ASTRO-DF, relies solely on noisy function evaluations and also enjoys almost-sure convergence guarantees.

 

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Thick embeddings of graphs into symmetric spaces via coarse geometry
 Barrett, B Hume, D Guth, L Portnoy, E Transactions of the American Mathematical Society volume 378 issue 2 885-909 (12 Dec 2024) doi:10.1090/tran/9109
Asymptotic dimension for covers with controlled growth
 Hume, D Mackay, J Tessera, R Journal of the London Mathematical Society volume 111 issue 1 (17 Jan 2025) doi:10.1112/jlms.70043

Summer starts on 2 July

What you doing 2 July? Only,  do you fancy coming out for a drink? Maybe something to eat? There'll be a bunch of us.

Summer Party,  Thursday 2 July, 4 p.m. Common Room. 

Bring your family. Or someone else's.

Image: Norman Rockwell - First date - Home Late

Parallel tutor training course for Oxford students

You may be aware that best-selling science writer Simon Singh, author of books such as “Fermat’s Last Theorem”, visited the Mathematical Institute at the start of the academic year. He and his colleague, Junaid Mubeen run a maths excellence programme (Parallel) for state school students. As well as giving some insights into what constitutes good practice in writing, outreach and education, they gave a brief outline of their Parallel programme, which currently supports 1,000 talented maths students every week from Year 7 through to Year 11.

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