Jan Arthur Christophersen

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Phone +47-22855903
Room 624
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Visiting address Ullevål stadion Sognsveien 77 B 0855 OSLO
Postal address Postboks 1053 Blindern 0316 OSLO
Other affiliations Department of Mathematics

Preprints

Comparison theorems for deformation functors with Jan O. Kleppe

Tags: Mathematics, Algebra and algebraic geometry

Publications

  • Christophersen, Jan Arthur & Ilten, Nathan Owen (2017). Vanishing cotangent cohomology for Plücker algebras. Communications in Algebra.  ISSN 0092-7872.  45(9), s 3929- 3947 . doi: 10.1080/00927872.2016.1249373
  • Christophersen, Jan Arthur & Ilten, Nathan Owen (2016). Hilbert schemes and toric degenerations for low degree Fano threefolds. Journal für die Reine und Angewandte Mathematik.  ISSN 0075-4102.  2016(717), s 77- 100 . doi: 10.1515/crelle-2014-0011
  • Christophersen, Jan Arthur & Ilten, Nathan Owen (2014). Degenerations to unobstructed Fano Stanley-Reisner schemes. Mathematische Zeitschrift.  ISSN 0025-5874.  278(1-2), s 131- 148 . doi: 10.1007/s00209-014-1309-3
  • Christophersen, Jan Arthur (2011). Deformations of equivelar Stanley-Reisner abelian surfaces. Advances in Mathematics.  ISSN 0001-8708.  227(2), s 801- 829 . doi: 10.1016/j.aim.2011.02.014
  • Altmann, Klaus & Christophersen, Jan Arthur (2010). Deforming Stanley-Reisner schemes. Mathematische Annalen.  ISSN 0025-5831.  348(3), s 513- 537 . doi: 10.1007/s00208-010-0490-x
  • Altmann, Klaus & Christophersen, Jan Arthur (2004). Cotangent cohomology of Stanley-Reisner rings. Manuscripta mathematica.  ISSN 0025-2611.  115, s 361- 378
  • Christophersen, Jan Arthur & Gustavsen, Trond Stølen (2001). On infinitesimal deformations and obstructions for rational surface singularities. Journal of Algebraic Geometry.  ISSN 1056-3911.  10(1), s 179- 198
  • Behnke, Kurt & Christophersen, Jan Arthur (1994). M-resolutions and deformations of quotient singularities. American Journal of Mathematics.  ISSN 0002-9327.  116, s 881- 903
  • Behnke, Kurt & Christophersen, Jan Arthur (1993). Hypersurface sections and obstructions (minimal elliptic singularities). Transactions of the American Mathematical Society.  ISSN 0002-9947.  335, s 175- 193
  • Behnke, Kurt & Christophersen, Jan Arthur (1991). Hypersurface sections and obstructions (rational surface singularities). Compositio Mathematica.  ISSN 0010-437X.  77, s 233- 268
  • Christophersen, Jan Arthur (1991). On the components and discriminant of the versal base space of cyclic quotient singularities, In D. Mond & J. Montaldi (ed.),  Singularity Theory and its Applications, Warwick 1989 Part 1.  Springer.  s 81 - 92
  • Christophersen, Jan Arthur (1987). Monomial curves and obstructions on cyclic quotient singularities, In G.-M. Greuel & G. Trautman (ed.),  Singularities, Representation of Algebras, and Vector Bundles, Proc., Lambrecht 1985.  Springer.  s 117 - 133

View all works in Cristin

  • Christophersen, Jan Arthur (2016). Derivations of artinian algebras and rigidity of curve singularities.
  • Christophersen, Jan Arthur (2014). Local cohomology and higher cotangent cohomology for cones over Grassmannians. FU Berlin.
  • Christophersen, Jan Arthur (2014). Local cohomology of the Kähler differentials of invariant rings.
  • Christophersen, Jan Arthur (2013). Comparison theorems for deformation functors.
  • Christophersen, Jan Arthur (2013). Simplicial complexes and projective varieties.
  • Christophersen, Jan Arthur (2012). Comparison theorems for deformation functors.
  • Christophersen, Jan Arthur (2012). Simplicial complexes and projective varieties.
  • Christophersen, Jan Arthur (2012). Triangulated topological manifolds and special algebraic varieties.
  • Christophersen, Jan Arthur & Kleppe, Jan Oddvar (2012). Comparison theorems for deformation functors.
  • Christophersen, Jan Arthur (2011). Associahedra, deltahedra and Mukai varieties.
  • Christophersen, Jan Arthur (2011). On the Hilbert scheme containing Fano threefolds of low degree.
  • Christophersen, Jan Arthur (2011). The associahedron, deltahedra and Stanley-Reisner Fano varieties.
  • Christophersen, Jan Arthur (2011). Triangulated topological manifolds and special algebraic varieties.
  • Christophersen, Jan Arthur (2010). Deformasjoner av monomiale idealer.
  • Christophersen, Jan Arthur (2010). Deformation Theory.
  • Christophersen, Jan Arthur (2010). Deformations of Stanley-Reisner abelian surfaces.
  • Christophersen, Jan Arthur (2010). Deformations of monomial ideals.
  • Christophersen, Jan Arthur (2010). Forelesningsnotater MAT2500.
  • Christophersen, Jan Arthur (2009). Ekvivelære trianguleringer av torusen og abelske flater.
  • Christophersen, Jan Arthur (2009). Equivelar triangulations of tori and abelian surfaces.
  • Christophersen, Jan Arthur (2009). Introductory course in Deformation Theory.
  • Christophersen, Jan Arthur (2009). Milnor fibers of cyclic quotient singularities.
  • Christophersen, Jan Arthur (2008). Deformations of Stanley-Reisner surfaces.
  • Christophersen, Jan Arthur (2008). The minimal triangulation of the torus and abelian surfaces.
  • Christophersen, Jan Arthur (2008). Triangulations of the Torus and Abelian Surfaces.
  • Christophersen, Jan Arthur (2007). Deformation theory in algebraic geometry.
  • Christophersen, Jan Arthur (2007). Deformations of a Stanley-Reisner abelian surface.
  • Christophersen, Jan Arthur (2006). Deformation theory, cotangent complexes and Massey products.
  • Christophersen, Jan Arthur (2006). Deformations of a Stanley-Reisner abelian surface and a Calabi-Yau 3-fold with Euler number 6.
  • Christophersen, Jan Arthur (2006). Deformations of a degenerate abelian surface in P6.
  • Christophersen, Jan Arthur (2006). Deformations of a degenerate abelian surface in P^6.
  • Christophersen, Jan Arthur (2000). Deforming Stanley-Reisner rings.
  • Christophersen, Jan Arthur (2000). Symmetri og materiens struktur - fra antikken til kvantefysikken.
  • Christophersen, Jan Arthur (1990). Obstructions for rational singularities and deformations of cyclic quotients.

View all works in Cristin

Published Nov. 30, 2010 11:20 PM - Last modified Feb. 1, 2017 8:05 PM