@misc{SvarstadPetersenRothmanetal., author = {Svarstad, Hanne and Petersen, Lars K. and Rothman, Dale and Siepel, Henk and W{\"a}tzold, Frank}, title = {Discursive Biases of the Environmental Research Framework DPSIR}, language = {en} } @misc{PetersenSuess, author = {Petersen, Lars and S{\"u}ß, Hendrik}, title = {Torus invariant divisors}, series = {Israel Journal of Mathematics}, volume = {182}, journal = {Israel Journal of Mathematics}, number = {1}, issn = {0021-2172}, pages = {481 -- 504}, abstract = {Using the language of Altmann, Hausen and S{\"u}ß, 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.}, language = {en} } @misc{PetersenKoch, author = {Petersen, Christer and Koch, Lars}, title = {St{\"o}rf{\"a}lle - Fluchtlinien einer Wissensfigur}, series = {Zeitschrift f{\"u}r Kulturwissenschaften}, journal = {Zeitschrift f{\"u}r Kulturwissenschaften}, number = {2}, issn = {2197-9111}, pages = {7 -- 12}, language = {de} }