Gilles Englebert

Mathematician (DPhil, Oxford) specialising in differential geometry of special holonomy; former Luxembourg IOI bronze medallist (2012, 2014, 2015) and IMO competitor; coach and lecturer for the Luxembourg informatics olympiad; 1-dan Go player and small-software tinkerer.

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• Completed a DPhil (PhD) in Mathematics at Oxford with the thesis 'Calibrated fibrations of compact manifolds with special holonomy', published 2024 - research on G2/Spin(7) manifolds and calibrated (coassociative/Cayley) submanifolds.Jan 1, 2024
• Represented Luxembourg at the IOI three times, earning bronze each time: 2012 (rank 130), 2014 Taipei (223 pts, rank 152) and 2015 Kazakhstan (275.55 pts, rank 106) - a rare perfect medal-conversion record from a country with no IOI gold history.Aug 2, 2015
• Public contact: [contact omitted], published on his own site alongside a PGP public key - he prefers direct/encrypted contact over social DMs.Sep 11, 2026
• Published a three-paper arXiv series 'Conically singular Cayley submanifolds' (I: Deformations 2023, II: Desingularisations 2023, III: Fibrations 2024), the last completing Kovalev's longstanding programme on coassociative fibrations.Jul 29, 2024
• Runs the personal site englebert.lu (mathematician and computer enthusiast), publishing open lecture notes for the Luxembourg informatics olympiad on minimum spanning trees, range queries, dynamic programming and graphs - he now trains the next generation of Luxembourg IOI contestants.Jan 1, 2024
• Avid Go player ranked 1d and 979th in Europe (EGD); represented Luxembourg at the 45th World Amateur Go Championship in Richmond, Canada in May 2025 and ran the Oxford Go tournament 2024.May 16, 2025
• The IOI statistics profile carries a 2023-era photo and lists him as a Luxembourg delegation leader in 2023 - he transitioned from contestant to national team leader/coach within roughly a decade.Jan 1, 2023
• Built a Gameboy emulator in C++ and writes small Go tools (a TypeScript Go board, an Anki-based corner-pattern flashcard app), with source hosted on sr.ht (~holonomy) and Codeberg (horonomy).Aug 23, 2026
• Competed at the International Mathematical Olympiad 2012-2014 for Luxembourg, winning a bronze in 2013 (21 pts, rank 163) and an honourable mention in 2014 (14 pts) - a dual math+informatics olympiad profile.Jul 1, 2014
• Studied at ETH Zürich before Oxford and competed in the ETH local ACM-ICPC selection, bridging his competitive-programming background into a mathematics research career.Jan 1, 2016
• Also competed at the IOI in 2010 (rank 248) and 2011 (rank 239) without a medal, then medaled on all three later appearances, showing a late-junior-career improvement curve.Jul 1, 2011