Differential equations In the differential equations, the nabla symbol, , denotes the three-dimensional gradient operator, del, the symbol (pronounced "del dot") denotes the divergence operator, the symbol (pronounced "del cross") denotes the curl operator.
Differential equations In the differential equations the nabla symbol, , ,denotes the three-dimensional gradient operator del, the symbol (pronounced "del dot") denotes the divergence operator, the symbol (pronounced "del cross") ,denotes the curl operator.