Jan Arthur Christophersen

• Christophersen, Jan Arthur & Kleppe, Jan Oddvar (2019). Comparison theorems for deformation functors via invariant theory. Collectanea Mathematica. ISSN 0010-0757. 70(1), p. 1–32. doi: 10.1007/s13348-018-0232-z. Full text in Research Archive
• Christophersen, Jan Arthur & Ilten, Nathan Owen (2017). Vanishing cotangent cohomology for Plücker algebras. Communications in Algebra. ISSN 0092-7872. 45(9), p. 3929–3947. doi: 10.1080/00927872.2016.1249373. Full text in Research Archive
• 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), p. 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), p. 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), p. 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), p. 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, p. 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), p. 179–198.
• Behnke, Kurt & Christophersen, Jan Arthur (1994). M-resolutions and deformations of quotient singularities. American Journal of Mathematics. ISSN 0002-9327. 116, p. 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, p. 175–193.
• Christophersen, Jan Arthur (1991). On the components and discriminant of the versal base space of cyclic quotient singularities. In Mond, D. & Montaldi, J. (Ed.), Singularity Theory and its Applications, Warwick 1989 Part 1. Springer. p. 81–92.
• Behnke, Kurt & Christophersen, Jan Arthur (1991). Hypersurface sections and obstructions (rational surface singularities). Compositio Mathematica. ISSN 0010-437X. 77, p. 233–268.
• Christophersen, Jan Arthur (1987). Monomial curves and obstructions on cyclic quotient singularities. In Greuel, G.-M. & Trautman, G. (Ed.), Singularities, Representation of Algebras, and Vector Bundles, Proc., Lambrecht 1985. Springer. p. 117–133.

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• Christophersen, Jan Arthur & Ranestad, Kristian (2018). Geometry of Moduli. Abelsymposium 2017. Springer. ISBN 978-3-319-94880-5. 326 p.

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• Christophersen, Jan Arthur (2018). Cotangent cohomology for Pflücker algebras.
• Christophersen, Jan Arthur (2016). Derivations of artinian algebras and rigidity of curve singularities.
• Christophersen, Jan Arthur (2014). Local cohomology of the Kähler differentials of invariant rings.
• Christophersen, Jan Arthur (2014). Local cohomology and higher cotangent cohomology for cones over Grassmannians. FU Berlin.
• 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 (2011). On the Hilbert scheme containing Fano threefolds of low degree.
• Christophersen, Jan Arthur (2011). Associahedra, deltahedra and Mukai varieties.
• Christophersen, Jan Arthur (2011). Triangulated topological manifolds and special algebraic varieties.
• Christophersen, Jan Arthur (2011). The associahedron, deltahedra and Stanley-Reisner Fano varieties.
• Christophersen, Jan Arthur (2010). Deformations of monomial ideals.
• Christophersen, Jan Arthur (2010). Deformasjoner av monomiale idealer.
• Christophersen, Jan Arthur (2010). Deformation Theory. Show summary

  Fire forelesninger, innføring i deformasjonsteori for unge forskere (dr og post dr).

• Christophersen, Jan Arthur (2010). Deformations of Stanley-Reisner abelian surfaces.
• Christophersen, Jan Arthur (2009). Ekvivelære trianguleringer av torusen og abelske flater.
• Christophersen, Jan Arthur (2009). Milnor fibers of cyclic quotient singularities.
• Christophersen, Jan Arthur (2009). Introductory course in Deformation Theory.
• Christophersen, Jan Arthur (2009). Equivelar triangulations of tori and abelian 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 (2008). Deformations of Stanley-Reisner surfaces.
• Christophersen, Jan Arthur (2007). Deformations of a Stanley-Reisner abelian surface.
• Christophersen, Jan Arthur (2007). Deformation theory in algebraic geometry.
• Christophersen, Jan Arthur (2006). Deformation theory, cotangent complexes and Massey products.
• Christophersen, Jan Arthur (2006). Deformations of a degenerate abelian surface in P^6.
• Christophersen, Jan Arthur (2006). Deformations of a degenerate abelian surface in P6.
• Christophersen, Jan Arthur (2006). Deformations of a Stanley-Reisner abelian surface and a Calabi-Yau 3-fold with Euler number 6.
• Christophersen, Jan Arthur (2000). Symmetri og materiens struktur - fra antikken til kvantefysikken.
• Christophersen, Jan Arthur (2000). Deforming Stanley-Reisner rings.
• Christophersen, Jan Arthur (2010). Forelesningsnotater MAT2500. Ingen.
• Christophersen, Jan Arthur (1990). Obstructions for rational singularities and deformations of cyclic quotients. Universitetet i Oslo.

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