EntityQ911268· pop 25· linked from 81 articlesd'Alembert operatorSign in to savesecond-order differential operator that is the Laplace operator of Minkowski spaceConnectionsMinkowski spacetimeEntityLaplace operatorEntityInternational Standard Book NumberEntityWikisourceEntityUnicodeEntityspecial relativityEntityelectromagnetismEntitywaveEntityJean Le Rond d'AlembertEntitykinetic energyEntityspinEntityquantum field theoryEntityOCLC, Inc.EntityLorentz transformationEntitywave equationEntityDirac delta functionEntityHamiltonian operatorEntityHeaviside step functionEntityMathWorldEntityparityEntityCategoriesDifferential operatorsHyperbolic partial differential equations