, LND-Filtrations and Semi-Rigid Domains
URL : https://hal.archives-ouvertes.fr/hal-01099283
, Methods to compute ring invariants and applications: a new class of exotic threefolds
URL : https://hal.archives-ouvertes.fr/hal-01169229
, Cox rings, Cambridge Studies in Advanced Mathematics, vol.144, 2015.
, Commutative algebra, 1989.
, Ga-actions on C n, vol.22, pp.4977-4988, 1994.
, Danielewski-Fieseler surfaces, Transformation Groups, vol.10, pp.139-162, 2005.
DOI : 10.1007/s00031-005-1004-x
URL : http://arxiv.org/pdf/math/0401225
Exotic Ga-quotients of SL 2 × A 1 ,
Families of A 1 -contractible affine threefolds, Algebr. Geom, vol.5, issue.1, pp.1-14, 2018. ,
URL : https://hal.archives-ouvertes.fr/hal-01740827
On exotic affine 3-spheres, J. Algebraic Geom, vol.23, issue.3, pp.445-469, 2014. ,
URL : https://hal.archives-ouvertes.fr/hal-00600542
Proper triangular Ga-actions on A 4 are translations, Algebra Number Theory, vol.8, issue.8, pp.1959-1984, 2014. ,
URL : https://hal.archives-ouvertes.fr/hal-00627521
Equivariant extensions of Ga-torsors over punctured surfaces, Ann. Sc. Norm. Super. Pisa Cl. Sci ,
URL : https://hal.archives-ouvertes.fr/hal-01569445
On a class of Danielewski surfaces in affine 3-space, Journal of Algebra, vol.321, pp.1797-1812, 2009. ,
URL : https://hal.archives-ouvertes.fr/hal-00019635
, Progress in Mathematics, vol.190, 2000.
Canonical factorization of the quotient morphism for an affine Ga-variety, Transformation Groups, 2018. ,
Encyclopaedia of Mathematical Sciences, 136. Invariant Theory and Algebraic Transformation Groups, VII, 2017. ,
Éléments de géométrie algébrique : II. Étude globale élémentaire de quelques classes de morphismes, Publ. Math. I.H.É.S, vol.8, pp.5-222, 1961. ,
, Algebraic Geometry Graduate Texts in Mathematics Series, vol.52, 1977.
Affine extensions of principal additive bundles over a punctured surface, Transform. Groups, vol.21, issue.2, pp.427-449, 2016. ,
Vector bundles on the punctured spectrum of a local ring, Proc. London Math. Soc, vol.14, issue.3, pp.689-713, 1964. ,
Proper Ga-actions on C 4 preserving a coordinate, Algebra Number Theory, vol.12, issue.2, pp.227-258, 2018. ,
On the Russell-Koras contractible threefolds, J. Algebraic Geom, issue.2, pp.247-268, 1997. ,
AK-invariant of affine domains, Affine Algebraic Geometry, pp.231-255, 2007. ,
Affine modifications and affine hypersurfaces with a very transitive automorphism group, Transform. Groups, vol.4, issue.1, pp.53-95, 1999. ,
URL : https://hal.archives-ouvertes.fr/hal-01623544
Positivity in algebraic geometry I, Ergebnisse der Mathematik und ihrer Grenzgebiete. 3. Folge. 48, 2004. ,
, Champs Algébriques, vol.39, 2000.
A remark on an iterative infinite higher derivation, J. Math. Kyoto Univ, vol.8, pp.411-415, 1968. ,
DOI : 10.1215/kjm/1250524060
URL : https://doi.org/10.1215/kjm/1250524060
Opérations du groupe additif sur le plan affine, C. R. Acad. Sci. Paris Sér. A-B, vol.267, pp.384-387, 1968. ,
Triviality of vector bundles over the affine space K 2, Proc. Nat. Acad. Sci. U.S.A, vol.44, pp.456-458, 1958. ,
Some applications of algebraic cycles to affine algebraic geometry, Algebraic cycles, sheaves, shtukas, and moduli, Trends Math, pp.185-215, 2008. ,
On free holomorphic C + -actions on C n and homogeneous Stein manifolds, Math. Ann, vol.286, pp.593-612, 1990. ,
DOI : 10.1007/bf01453590
The theorem of Riemann-Roch for high multiples of an effective divisor on an algebraic surface, Ann. of Math, issue.2, pp.560-615, 1962. ,
E-mail address: I.Heden@warwick.ac.uk DEPARTMENT OF MATHEMATICS, FACULTY OF SCIENCE ,