Error: `():1`v:b1 `leftv:b1 B2`v:b2 `rightv:b1 B2`v1:b1`v2:b2 `(v1;v2):b1b2wenowintroducecombinatorswhichareprogramconstructscorrespondingtotheleft To Rightandright To Leftreadingofeachisomorphism.thesecon - PowerPoint Presentations and PDF Documents