There appears to be some infinities in classical electromagnetism:
The total energy contained in the electric field of a point charge diverges.
The potential at a point charge diverges.
The potential at a line charge diverges.
The potential at a volume charge does not diverge.
Are there any references/discussions providing rigorous arguments to show these, and other similar phenomena?
I found a few rather informal explanations:
From StackExchange:
The problem of infinite energy of electron as point charge?
