§1.1 Special Notation

$x,y$	real variables.
$z$	real variable in §§1.5–1.6.
$z,w$	complex variables in §§1.9–1.11.
$j,k,\ell$	integers.
$m,n$	nonnegative integers, unless specified otherwise.
$\left\langle f,g\right\rangle$	distribution.
$\deg$	degree.
primes	derivatives with respect to the variable, except where indicated otherwise.