Ewch i’r prif gynnwys
Dr Mathew Pugh

Dr Mathew Pugh

Uwch-ddarlithydd

Yr Ysgol Mathemateg

Email
pughmj@cardiff.ac.uk
Telephone
+44 (0)29 2087 6862
Campuses
M/2.48, 2il lawr, Sefydliad Mathemateg, Heol Senghennydd, Caerdydd, CF24 4AG
Siarad Cymraeg

Trosolwg

Mae fy niddordebau mathemateg mewn algebrâu gweithredyddion - yn arbennig, theory is-ffactorau, y dechreuwyd gan fedalydd Fields, Vaughan Jones. Mae is-ffactorau yn gyffredinoliaeth o grwpiau sy’n cynnwys dimensiynau sydd ddim yn gyfanrifau. Maent yn amgodio cymesureddau cwantwm tu hwnt i grwpiau ac mae ganddyn nhw gymwysiadau yn Theori Maes Cydffurfiol (Conformal Field Theory, CFT). Rwyf wedi ehangu’r theory o is-ffactorau trwy luniadau perthnasol i grwpiau Lie. Mae fy ngwaith wedi darparu enghreifftiau newydd ar gyfer algebryddion, a oedd yn rhan o raglen 6-mis yn Sefydliad Isaac Newton, Caergrawnt, yn 2017.

Mae fy ymchwil presennol yn canolbwyntio ar ddosbarthu categorïau modiwl ar gyfer categorïau tensor modwlar sy’n ymddangos o fewn CFT, yn arbennig y rhai sy’n gysylltiedig i grwpiau Lie cryno, ond nid yn angenrheidiol yn gysylltiedig. Dechreuodd hyn gyda’r achos o SU(3) fel rhan o fy PhD, ond mae wedi ymestyn ers hynny i G2, Sp(2) ac SO(3).

Mae hefyd gennyf ddiddordebau mewn ymchwil addysg mathemateg, lle mae fy niddordebau yn bennaf yn ymwneud ag ymrwymiad myfyrwyr gyda'u astudiaethau. Mae agweddau arbennig o hyn yn cynnyws: agweddau ac ymarferion addysgu effeithiol, yn arbennig ar gyfer garfannau mawr;  cymhellu ymrwymiad, yn arbennig trwy defnyddio asesiadau; a chyfeiriad meddwl ac agweddau at addysgu myfyrwyr.

Dyletswyddau gweinyddol

  • Arweinydd Asesiad ac Adborth
  • Dirprwy Reolwr Dysgu ac Addysgu
  • Cydlynydd darpariaeth cyfrwng Cymraeg

Grwpiau ymchwil

Geometreg, Algebra, Ffiseg Fathemategol a Topoleg

Addysg Mathemateg

Bywgraffiad

Addysg a chymhwysterau

  • 2009: PhD (Mathemateg), Prifysgol Caerdydd
  • 2004: BSc Mathemateg, Prifysgol Caerdydd

Safleoedd academaidd blaenorol

  • 2011 - presennol: Ysgol Mathemateg, Prifysgol Caerdydd
  • 2008 - 2011: Cymrawd ymchwil, Prifysgol Caerdydd

Pwyllgorau ac adolygu

  • 2015 - presennol: Aelod o Banel Myfyriwr/Staff yr Ysgol
  • 2013 - presennol: Aelod o Bwyllgor Dysgu ac Addysgu
  • 2013 - presennol: Aelod o Gangen Prifysgol Caerdydd y Coleg Cymraeg Cenedlaethol
  • 2014 - 2016: Aelod o Fwrdd Golygu'r Wefan Mathemateg
  • 2011 - 2012: Aelod o'r Panel Arolygu Modiwlau

Pwyllgorau allanol

  • 2011 - presennol: Aelod o Banel Pwnc Mathemateg a Ffiseg y Coleg Cymraeg Cenedlaethol

Cyhoeddiadau

2020

2019

2016

2015

2013

2012

2011

2010

2009

Addysgu

Israddedig

Rwy'n dysgu ar y modiwlau canlynol:

  • MA1056 Seiliau Mathemateg II
  • MA3952 Modiwl Darllen (Theori Clymau)
  • MA3900 Cyflwyniad i Addysgu Mathemateg mewn Ysgol Uwchradd

Rwyf hefyd yn gyfrifol am darpariaeth cyfrwng Cymraeg ar draws y raglen israddedig.

Prosiectau BSc/MMath

  • 2020/21: Rhys Davies (prosiect MMath): Theori gynrychioliad o grwpiau feidraidd

Prosiectau blaenorol

  • 2019/20: Sioned Owen (prosiect MMath): Cynrychioliadau o grwpiau feidraidd 
  • 2019/20: Foteinit Kleanthous (prosiect BSc): Investigating learning communities in mathematics at Cardiff University [ar y cyd gyda Rob Wilson]
  • 2019/20: Jonathan Owens (prosiect BSc): Attendance at University [ar y cyd gyda Rob Wilson]
  • 2018/19: Shauna Ford (prosiect MMath): Representation theory of the braid group
  • 2018/19: Harry Smith (prosiect MMath): Representation theory of finite groups
  • 2017/18: Mari Havard (prosiect BSc): Using questions which assess understanding and creativity in mathematics
  • 2017/18: Jennifer Holden (prosiect BSc): Can we increase the effectiveness of feedback provided on homework without affecting its quality?
  • 2017/18: Lucy Hamilton (prosiect BSc): Digital badges in higher education
  • 2016/17: Ruth Cresswell (prosiect BSc): Mathematics outreach activities for primary school [ar y cyd gyda Federica Dragoni]
  • 2015/16: Abigail Dowler (prosiect BSc): Confidence, engagement and attainment in mathematics [ar y cyd gyda Rob Wilson]

Mathematics Research

Most of my mathematics research has revolved around the theory of modular invariant partition functions for integrable statistical mechanical models associated to Lie groups and related constructions of braided subfactors or modular tensor categories. My early research focused on braided subfactors associated to the SU(3) modular invariants, although more recently I have focused on modular invariants for other rank two Lie groups, namely Sp(2), SO(5) and G2, and also non-connected groups such as the rank one Lie group SO(3). This has led to the classification of module categories for the modular tensor categories associated with SU(3) and, more recently, SO(3).

In particular, I have studied various invariants associated with these braided subfactors. This includes the computation of cell systems for the representation graphs (also called nimreps) which label the modular invariants, and the realisation of modular invariants by braided subfactors. I have studied spectral measures for the nimrep graphs. And in another direction I have constructed the higher preprojective algebras or corresponding Jacobi algebras associated to these nimreps, including certain homological invariants of these algebras.

My ArXiv Articles

Mathematics Education Research

I have been interested in mathematics education for a long time. More recently my interests have converged and crystallised around the idea of student engagement, specifically students' academic engagement with their mathematics studies at HE.

There are many relevant facets to this overarching theme:

  • Approaches to teaching, particularly in large cohorts
  • Incentivising engagement, particularly through use of assessment
  • Assessment and Feedback, more generally, in supporting learning and engagement
  • Learning communities
  • Students' mindsets and approaches to learning

Some particular research interests going forward:

  • Which forms of engagement are most effective for learning mathematics?
  • What factors influence student engagement in mathematics?
  • How to improve student engagement most effectively for learning?
  • Is incentivised engagement effective for learning?

Conferences organised

  • IMA HE Teaching & Learning Workshop on Feedback in Mathematics, Cardiff, 11 June 2019 (with Rob Wilson)
  • LMS South Wales & South West Regional Meeting and Workshop on Algebraic Structures and Quantum Physics, Cardiff, 13–15 December 2017 (with Gandalf Lechner, Simon Wood)
  • LMS-WIMCS Workshop on Cluster Algebras and Preprojective Algebras, Cardiff, 17–18 October 2014
  • INI-WIMCS Meeting on Noncommutative Geometry, Cardiff, 16–20 April 2012 (local organiser with David Evans, Otgonbayar Uuye)
  • WIMCS Workshop on Higher Gauge Theory, TQFT's and Categorification, Cardiff, 9–10 May 2011 (with David Evans Tim Porter)
  • EU-NCG Focused Semester on Mathematical Physics, Cardiff, February – June 2010 (with David Evans).

Supervision

Goruchwyliaeth gyfredol

Shauna Ford

Research student

Past projects

  • Lorenzo Di Biase (second supervisor, main supervisor Timothy Logvinenko) PhD 2020: Categorical actions of generalised braids
  • Stephen Moore (second supervisor, main supervisor David Evans) PhD 2016: Non-semisimple planar algebras
  • Claire Shelly (second supervisor, main supervisor David Evans) PhD 2013: Type III subfactors and planar algebras