Algebraic Topology

Algebraic Topology is rich and diverse area of mathematics that develops and applies a variety of algebraic, categoric and combinatorial techniques to solve problems in many areas of maths.


  It was originally born in the 1920's and 30's to study various topological and geometric issues, but since then has had spectacular effect in areas such as number theory, mathematical physics, algebraic geometry, dynamics, logic, algebra, computer science and even social theory, and it continues to provide foundational insight into core areas of geometry and topology.


  In Leicester we have a very active research group that covers both fundamental work within algebraic topology and homological algebra as well as some of its important applications to other parts of mathematics. Current research of members of the group includes both stable and unstable homotopy theory and their relation to algebraic geometry, category theory, dynamical systems, mathematical physics, structured spectra, homological algebra, aperiodic tilings and moduli spaces and stacks of various kinds.


   Leicester is home to the London Maths Society funded "Transpennine Topology Triangle" (TTT), a joint topology seminar run with the Universities of Manchester and Sheffield at which staff and students meet about 6 times a year for talks, collaboration and generally keeping in touch with the topological community in England. Leicester has also regularly hosted the British Topology Meeting as well as workshops on the interfaces with other areas of mathematics such as "Algebraic methods in geometry and physics" in 2008 and "Aperiodic Order" in 2009.


Current members





Some recent publications


  1. D. Blanc, S. Paoli, Segal-type algebraic models of n–types. Algebraic & Geometric Topology. 2015 Jan 15;14(6):3419-91.
  2. I. Galvez-Carrillo, F. Neumann, A. Tonks, Thomason cohomology of categories. Journal of Pure and Applied Algebra 217 (2013), 2163–2179.
  3. I. Galvez-Carrillo, F. Neumann, A. Tonks, Andre spectral sequences for Baues-Wirsching cohomology of categories. Journal of Pure and Applied Algebra 216 (2012), 2549-2561.
  4. M. Jibladze,T. Pirashvili, Cohomology with coefficients in stacks of abelian 2-groups, Journal of Pure and Applied Algebra, 216 (10), (2012), 2274-2290.
  5. M. Felisatti, F. Neumann, Secondary theories for etale groupoids. Regulators, Contemporary Mathematics 571 (2012), 135-151.
  6. A Clark, S Hurder, Embedding solenoids in foliations, Topology and its Applications, 158 (11), (2011), 1249-1270.
  7. T. M. Fiore, S. Paoli, A Thomason model structure on the category of small n-fold categories, Algebraic and Geometric Topology, 10 (2010), 1933-2008.
  8. S. PaoliWeakly globular cat^n-groups and Tamsamani's model, Advances in Mathematics, 222 (2009) 621-727.
  9. Baues, Hans-Joachim; Jibladze, Mamuka; Pirashvili, Teimuraz, Third Mac Lane cohomology, Math. Proc. Cambridge Philos. Soc. 144 (2008), no. 2, 337–367.

Current PhD students

 Chris Braun, Willian Obeng-Denteh, Issac Owusu-Mensah (Willian and Issac are Frank's students under the MARM project, physically working in Africa), Khadijah Sharaf, Jamie Walton,  Samirah Al-Sulami, Jinan Al-Asady, Zeki Mirza 

 Recent PhDs:


  • "Cohomology of Lambda Rings" by Michael Robinson (2010)
  • "Euler characteristics and cohomology for quasiperiodic projection tilings" by Claire Irving (2006)
  • Past members and postdocs: James Cranch, Marcello Felisatti, Le Minh Ha, Thomas Huettemann


The Algebraic Topology group has received funding from:  








































































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Contact details

Department of Mathematics
University of Leicester
University Road
Leicester LE1 7RH
United Kingdom

Tel.: +44 (0)116 252 3917
Fax: +44 (0)116 252 3915

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