hey

i was compiling abasiclist of functions that need to be checked for branch points (as oppose to points of singularities)

at the moment all i have are:

$\displaystyle f(z) = z^{\frac{1}{2}} ,

f(z) = \ln(z) ,

f(z) = \arctan(z) $

does anyone have anything to add this vague list?

its not meant to be a formula sheet or anything, just a list of terms that if, cropping up in a contour integral type question, that i should associate with branch-point methods