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Photo of Prof Andreas Langer

Prof Andreas Langer



Telephone: 01392 725278

Extension: (Streatham) 5278

Research Interests

  • Arithmetic geometry, in particular:
  • Arithmetic conjectures on algebraic cycles in connection with p-adic Hodge-theory,
  • Crystalline cohomology over a non-perfect base
  •  Integral p-adic Hodge- theory

Courses taught in Exeter in 2022-2023 Algebraic Curves,  Algebraic Number Theory

Recent publications:  A.Langer, T Zink: Grothendieck-Messing deformation theory for varieties of K3-type , Tunisian Journal of Math, Vol 1 no4, 2019, pp 455-516

A.Langer: p-adic deformation of motivic Chow groups , Documenta Math. 23 , 2018, 1863-1894

O.Gregory, A.Langer: Overconvergent de Rham-Witt cohomology for semistable varieties, Muenster Mathematical Journal, Vol 13,2. 2020, pp 541-571.

O.Gregory, A.Langer: Higher Displays arising from filtered de Rham-Witt complexes, in: Arithmetic L-functions and Differential Geometric Methods, Proceedings to "Regulators IV" , Paris 2016,Progress in Mathematics Vol 338, 2021, pp 121-140

A.Langer and T. Zink: A Comparison of logarithmic overconvergent de Rham-Witt and logarithmic crystalline cohomology for projective smooth varieties with normal crossing divisor.Padova Math.Journal 2017

A.Langer, T Zink,, Comparison between overconvergent de Rham-Witt and crystalline cohomology for projective smooth varieties, Math. Nachrichten 288, No. 11-12, (2015) 1388-1393

O.Gregory, A.Langer: Hodge-Witt decomposition of relative crystalline cohomology, Journal of the London Mathematical Society, DOI: 10.1112/jlms.12679. Volume 106, issue 4, (2022),      pp 4009-4046

O.Gregory, A.Langer: Motivic Cohomology of semistable varieties, preprint 2021. arxiv.        

Grants:  EPSRC Standard Grant Project No T005351/1 , Title: Integral p-adic Hodge-theory and applications to p.adic deformation theory.  1/2020-12/2022

Research assistant funded by the grant: Dr Oliver Gregory. Email: