I am interested in the area of categorical algebra. My PhD thesis is on homology in semi-abelian categories, and after that I also investigated more general settings such as relative Mal'tsev categories and relative Goursat categories. I also worked on higher extensions and use categorical Galois theory. Below are links to my PhD thesis and my papers.

• The fundamental group functor as a Kan extension
  with Tomas Everaert and Tim Van der Linden,
  Cah. Topol. et Géom. Différ. Catég. LIV (2013), 184-210.
  Preprint on arXiv.
• Relative Mal'tsev categories
  with Tomas Everaert, Tamar Janelidze-Gray and Tim Van der Linden,
  TAC 28 (2013), No. 29, 1002-1021.
  Preprint in Séminaire de Mathématique No. 383, Université catholique de Louvain, pdf.
• Homology in relative semi-abelian categories
  Applied Categorical Structures 21 (2012), No. 6, 523-543 .
  Preprint pdf.
• Resolutions, Higher Extensions and the Relative Mal'tsev Axiom
  with Tomas Everaert and Tim Van der Linden,
  J. Algebra 371 (2012), 132-155.
  Latest Preprint on arXiv.
  First Preprint (including one more section) at Pré-Publicações DMUC 10-49 (2010), 1-44.
• Relative Goursat Categories
  with Tamar Janelidze,
  J. Pure Appl. Alg. 216 (2012), 1726-1733.
  Final pdf (copyright Journal of Pure and Applied Algebra).
• On Satellites in Semi-Abelian Categories: Homology without Projectives
  with Tim Van der Linden, Math. Proc. Cambridge Philos. Soc. 147 (2009), No. 3, 629-657.
  Final pdf (copyright Cambridge Philosophical Society).
• A Comparison Theorem for Simplicial Resolutions
  with Tim Van der Linden,
  Journal of Homotopy and Related Struct., 2 (2007), No. 1, 109-126.
• Three Viewpoints on Semi-Abelian Homology
  PhD Thesis, supervisor Prof. Peter Johnstone (2009).
  Available on DSpace, University of Cambridge.