function [Alpha, Gamma, Beta]= data; % % This file contains the information in a Heegaard diagram. % The data below is for a diagram of the Seifert fibration \Sigma(2,3,4) % % Ciprian Manolescu - May 18, 2005 % % % the number of intersection points on each alpha and gamma curve Alpha = [6 7]; Gamma = [5 5]; % input the intersection points of each beta curve with the alpha and % gamma curves, in order % the first field says which curve is intersected, in order; gamma curves % have a minus sign Beta(1).curve = [-1 1 2 -2 2 1 -1 2 -2]; % the second field says which point on each alpha or gamma curve is % being hit by the beta, in order % the sign is +1 for an alpha intersection going up or % a gamma intersection going outward; -1 otherwise Beta(1).point = [3 -3 3 -3 5 -5 4 -7 5]; Beta(2).curve = [-1 1 2 1 -1 -2 2 1 2 -2]; Beta(2).point = [2 -2 4 -6 5 2 -2 4 -6 4];