2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52175The worldsheet representation of the sum of the planar diagrams of scalar $Φ^3$ field theory and ${\cal N}=0,1,2,4$ supersymmetric Yang-Mills theory is explained. This was a talk given to the Light Cone Workshop: Hadrons and Beyond, 5-9 August 2003, University of Durham.8 pages,4 figures,talk given to LC03High Energy Physics - Theorytext