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Re: [Phys-l] math notation question



At 6:03 PM -0600 12/8/06, Rauber, Joel wrote:

As to the d'Alembertian, the authorities I like to use simply use the
square without the superscript 2.

Richtmyer, Kennard, and Cooper in "Introduction to Modern Physics" use \box
for a 4-D gradient so that the equation of continuity is \box \cdot \vec{J}
= 0; they then give \box^2\vec{A} = -\mu_0\vec{J} and \box^2\phi =
-\rho/\epsilon_0. They then say the field tensor is f_{ik} =
\box\times\vec{A}. But I guess this is old notation, although I can see
their use of the power on \box to indicate how many partial derivatives are
taken.

Larry