2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52186We derive a discrete path integral for massless fermions on a hypercubic spacetime lattice with null faces. The amplitude for a path with N steps and B bends is +/- (1/2)^N (i/sqrt{3})^B.4 pages, 1 figure; v.2: added demonstration that fermion doubling does not occur, added appendix proving convergence, other minor changes of presentationHigh Energy Physics - TheoryGeneral Relativity and Quantum CosmologyHigh Energy Physics - LatticeMathematical PhysicsQuantum Physicstext