Lawrence Hollom

Lawrence Hollom is a British mathematician working in extremal, probabilistic, infinitary and geometric combinatorics. He is a postdoctoral researcher at EPFL (chair of convex and high-dimensional geometric analysis and combinatorics), working with Marius Tiba, having completed a PhD in Pure Mathematics at the University of Cambridge (DPMMS) in 2025 supervised by Bela Bollobas. He was a UK International Mathematical Olympiad contestant in 2015 (Honourable Mention) and 2016 (silver), and a UK IOI 2016 bronze medallist. Between his Cambridge master's (Part III, 2020) and PhD he worked as a Quantitative Trader at Jane Street Capital in London (Sept 2020 - Jan 2022). He was awarded the 2026 Frontiers in Science Prize by the International Congress of Basic Science for 'The Bunkbed Conjecture is Not Robust to Generalisation'.

Notes2

• Quant employment verification: CONFIRMED. Lawrence Hollom worked at Jane Street Capital as a Quantitative Trader in London from 2020-09 to 2022-01, listed as a full-time role under 'Professional experience' on his own University of Cambridge DPMMS CV (https://www.dpmms.cam.ac.uk/~lh569/cv.pdf). Jane Street Capital is a global proprietary trading firm and market maker, i.e. a genuine quantitative-finance employer, so this is an actual role (not a student programme, insight day, camp, scholarship or incoming offer). Identity is supported: the CV is the same Lawrence Hollom as the EPFL postdoc and personal-site owner (lawrencehollom.github.io), all cross-linked, and matches the UK IMO 2015/2016 and IOI 2016 contestant. Limits: the CV is the only source listed here; the role is not independently corroborated by a second primary source, and no other quant-finance employers/internships were found on the CV or public profiles.
• Jane Street Capital Quantitative Trader, London, September 2020 - January 2022: a full-time position listed under 'Professional experience' on his own Cambridge DPMMS CV, between completing Part III (July 2020) and starting his PhD (September 2022). Jane Street Capital is a global proprietary trading firm and market maker.
• Career timeline from his own DPMMS CV: BSc Mathematics Cambridge 2016-07/2019-07; Part III (Master's, ranked 2nd in year) 2019-07/2020-07; Jane Street Capital Quantitative Trader London 2020-09/2022-01; PhD Pure Mathematics Cambridge (supervisor Bela Bollobas) 2022-2025; postdoc EPFL from 2025.
• Jane Street Capital is a proprietary trading firm / market maker; the CV lists the 'Quantitative Trader' role in its 'Professional experience' section, i.e. a full-time position held after Part III and before the PhD, not a student programme, insight day, camp, scholarship or incoming offer.
• Googology Wiki profile states 'Lawrence Hollom (also called DrCeasium)' - 'DrCeasium' is his long-standing online alias, useful for disambiguating GitHub/forum handles.
• Awarded the 2026 Frontiers in Science Prize by the International Congress of Basic Science for 'The Bunkbed Conjecture is Not Robust to Generalisation' (announced 19 May 2026); EPFL news coverage confirms it.
• Maintains a Lean formalisation repo (github.com/LawrenceHollom/lean-norine) for 'Hypercube geodesics with few colour changes', linked from his personal site - evidence of formal-verification activity alongside combinatorics research.
• Research interests are extremal, probabilistic, infinitary and geometric combinatorics; the move from a trading role (2020-2022) into a Cambridge PhD (2022) is documented on his CV but no source states his reasons.