TY - GEN A1 - Svarstad, Hanne A1 - Petersen, Lars K. A1 - Rothman, Dale A1 - Siepel, Henk A1 - Wätzold, Frank T1 - Discursive Biases of the Environmental Research Framework DPSIR Y1 - 2008 ER - TY - GEN A1 - Petersen, Lars A1 - Süß, Hendrik T1 - Torus invariant divisors T2 - Israel Journal of Mathematics N2 - Using the language of Altmann, Hausen and Süß, we describe invariant divisors on normal varieties X which admit an effective codimension one torus action. In this picture, X is given by a divisorial fan on a smooth projective curve Y. Cartierdivisors on X can be described by piecewise affine functions h on the divisorial fan S whereas Weil divisors correspond to certain zero and one-dimensional faces of it. Furthermore, we provide descriptions of the divisor class group and the canonical divisor. Global sections of line bundles O(D h ) will be determined by a subset of a weight polytope associatedto h, and global sections of specific line bundles on the underlying curve Y. Y1 - 2011 UR - 10.1007/s11856-011-0039-z SN - 0021-2172 SN - 1565-8511 VL - 182 IS - 1 SP - 481 EP - 504 ER - TY - GEN A1 - Petersen, Christer A1 - Koch, Lars T1 - Störfälle – Fluchtlinien einer Wissensfigur T2 - Zeitschrift für Kulturwissenschaften Y1 - 2011 SN - 2197-9111 IS - 2 SP - 7 EP - 12 ER -