Why do we assume electromagnetic fields to be doubly differentiable?
119258
Electromagnetic field and continuous and differentiable vector fields
8321
Why differentiability implies continuity, but continuity does not imply differentiability?
155696
Divergence of Electric Field Due to a Point Charge
114620
Maxwell in multiple dimensions: What happens to curl?
127114
Differentiability implying continuity
45167
Deriving the speed of the propagation of a change in the Electromagnetic Field from Maxwell's Equations
93528
Continuous versus differentiable
82746
Confusion regarding the direction of an electric field
30032
What does it mean to take the gradient of a vector field?
89479
Galilean invariance of a subset of Maxwell equations
73073
Differentiating $y=x^{2}$
67641
Why should field operators satisfy the classical equations of motion?
106021
How wrong are the classical Maxwell's equations (as compared to QED)?
885
Why is the 2nd derivative written as $\frac{\mathrm d^2y}{\mathrm dx^2}$?
114836
Electric and Magnetic field's phase difference shift in linearly polarized electromagnetic waves
35671
Why can a discontinuous function not be differentiable?
158610
Why is the differentiation of $e^x$ is $e^x$?