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dP1.in
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % Example input file for cohomCalg % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % This file contains the geometry data of the del-Pezzo-1 surface, which % corresponds to the single blowup of the CP^2 projective space % % The vertices and GLSM charges: vertex u1 = ( 1, 1 ) | PIC: H | GLSM: ( 1, 0 ); vertex u2 = ( -1, 0 ) | GLSM: ( 1, 0 ); vertex u3 = ( 0, -1 ) | GLSM: ( 1, 1 ); vertex u4 = ( 0, 1 ) | PIC: X | GLSM: ( 0, 1 ); % The Stanley-Reisner ideal: srideal [u1*u2, u3*u4]; % Computation time for this example is quasi-instantaneous, % so turn off intermediate files: monomialfile off; % And finally the requested line bundle cohomologies: ambientcohom O(-1, -2); ambientcohom O(-2, 0); ambientcohom O(-3, -2);