Mathematicians have been concerned with population growth
and movement since the days of Leonhard Euler and Thomas Malthus.
Chapter i of this paper sketches the history of the development of the
modern population theory.
In Chapter II, a partial differential equation is derived which
governs the growth and movement of...
In introducing the method of electrical images we first consider
the elementary problem of finding the electric field of a single point
charge and an infinite conducting plane. Then a problem involving a
conducting sphere and an exterior point charge is investigated and
the results are applied in the solution...
