nabla वाक्य

This is a gradient \ nabla ^ a t is everywhere timelike and future-directed.
where \ nabla _ \ mu is the general-relativistic covariant derivative of a spinor.
Further \ rho is the fluid density and \ nabla \ times is the curl operator.
implying that the vector \ nabla \ psi is normal to the curve \ psi = C.
where the \ nabla on the right denotes the gradient and \ cdot is the dot product.

If all the elements of \ nabla f are desired, then n function evaluations are required.
An arbitration request regarding User : Nabla has now closed and the decision can be read here.
This tells us that \ nabla coincides with D when acting on objects with only internal indices.
In other words, the unary " modal " operations \ nabla _ j are lattice endomorphisms.
The symbol \ partial _ k denotes partial derivative, while \ nabla _ k denotes covariant derivative.