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Currently I am a postgraduate researcher in the School of Mathematical Sciences at Queen Mary University of London in my 4th year. I am under the supervision of Prof. Juan A. Valiente Kroon.
My research interests lie in General Relativity, particularly where the analysis of PDEs and Conformal/Differential Geometry enter the picture.
I am also exploring machine learning methods for mathematical discovery in the context of Differential Geometry.
Contact: j.marajh@qmul.ac.uk
Address: School of Mathematical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
Research
Research
Controlled regularity at future null infinity from past asymptotic initial data: the wave equation with G. Taujanskas and J. Valiente Kroon.
A Melrosian perspective of Friedrich’s cylinder at spatial infinity (to appear on arXiv in collaboration with E. Gasperin and J. Valiente Kroon).
Teaching/Supervision
Teaching/Supervision
Mentor for student on STRIDE program with C. Garetto.
Applied Linear Algebra (TA), Differential Equations (TA), Introduction to Algebra (TA) (2025/26).
Applied Calculus (TA), Vectors & Matrices (Marking and Exam checking), Statistical Modelling (TA, Marking and Exam Checking) (2024/25).
Applied Calculus (TA), Mathematics B (TA), Vectors & Matrices (TA) (2023/24).
Introduction to Algebra (TA and Marking) (2022/23).
Outreach
Outreach
A Mathematician Like Me (with A. Onus and M. F. Pintado) in London Mathematical Society Newsletter (05/2025)
A Report on the Black Heroes of Mathematics Conference 2024 in London Mathematical Society Newsletter (02/2025)
Presentations
Presentations
Academic
Academic
Geometry, Analysis and Gravitation (GAnG) group meeting, QMUL, UK (02/2026)
Hyperboloidal Foliations and their Application, Erwin Schrödinger Institute, Vienna (01/2026)
Virtual Infinity Seminar (12/2025)
Poster presentation, GR24/Amaldi16, Glasgow, UK (07/2025)
Special Strong Seminar, Niels Bohr Institute, University of Copenhagen, Denmark (06/2025)
Advances in Hyperbolic Problems, QMUL, UK (06/25)
PGR Day, QMUL, UK (05/2025)
Brit Grav 25, University of Birmingham, UK (04/2025)
Queen Mary Internal Postgraduate Seminar (QuIPS), QMUL, UK (03/2025)
CERS 15, Radboud University, The Netherlands (01/2025)
GAnG group meeting, QMUL, UK (10/2024)
Poster presentation, Swansea Summer School in Nonlinear PDEs, Swansea University, UK (06/2024)
Poster presentation, PGR Day, QMUL, UK (05/2024)
QuIPS, QMUL, UK (02/2024)
QuIPS, QMUL, UK (09/2023)
Outreach
Outreach
A Mathematician Like Me, Diversity and Decolonisation in Mathematics, University of Warwick (04/2025)
Diversifying the Maths Curriculum, Leyton Sixth Form College, London (04/2025)
Undergraduate Research Seminar talk, QMUL (01/2025)
Guest speaker for A-Level students, Ruislip High School, London (12/2024)
"Stepping Stones" workshop (as a volunteer with Future First), Haberdashers' Hatcham College, London (12/2024)
Keynote speaker for annual Presentation Evening, Ruislip High School (11/2024)
Guest speaker for A-Level students, Ruislip High School, London (6/2024)
Diversifying the Maths Curriculum, Preston Manor High School, London (11/2023)
Undergraduate Research Seminar talk, QMUL (10/2023)
Awards
Awards
Short-term visitor award (£1,450) for Fields Institute thematic programme on Shocks and Singularities (May 2026).
Awarded Postgraduate Research Fund (£1,500) from QMUL (Dec 2025/Jan 2026).
QMUL Principal's Studentship covering full tuition and providing a stipend during PhD (2022-2026).
PGR Subject Representative of the year 2025 by QMUL Students' Union at the annual Education Awards.
Runner-Up for Best Student Talk at Brit Grav 25.
Second Runner-Up of Ann Cook Poster Prize at School of Mathematical Sciences PGR Day 2024.
Research stipend for STRIDE program for 8 weeks as a research intern Summer 2022.
Organised Activities
Organised Activities
Co-organiser of the Undergraduate Research Seminar (2025-26).
Co-organiser of the Queen Mary Internal Postgraduate Seminar (2023-24).
Co-lead of EDI Subgroup in the School of Mathematical Sciences (2022-Present).
Other Responsibilities
Other Responsibilities
October 2023-September 2024: Head of Queen Mary Maths Circle (in collaboration with We Solve Problems).
November 2022-Present: Mathematics PGR Representative.
February 2023-September 2025: Levelling Up Maths Tutor.
Memberships
Memberships
Associate Fellow of the Higher Education Academy (AFHEA).
Associate member of the London Mathematical Society.
Member of the Institute of Physics (MInstP).
Fun stuff
Fun stuff
I really enjoy playing Dungeons & Dragons and have played for over 8 years almost every week — even during a pandemic. I am an avid videogame enjoyer and used to stream games online, in particular I enjoy rhythm games such as Osu! and looter shooters like Destiny 2. I also watch (a lot of) anime.
I walk every day into the office (permitting I do not get soaked in the rain) for over an hour and a half in the morning. It gives me plenty of time to think after opening arXiv in the morning and starts my day right.
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