If ∑a_nzⁿ and ∑b_nzⁿ have radii of convergence R₁ and R₂, then radius of convergence ∑a_nb_nzⁿ is

Radius of convergence of ∑ (n!/nⁿ) zⁿ and ∑ zⁿ/n!

Any linear transformation which transforms the real axis into itself can be written with real coefficient

Jordan arc is

The reflection z → complement of z is a linear transformation

If the cross ratio (z₁, z₂, z₃, z₄) is real then

Let {a_n} be a sequence of real numbers.

1) {a_n} is convergent

2) {a_n} is a Cauchy sequence

Another name(s) for linear transformation

Every linear transformation is not a conformal map

Symmetric point of a(center of C) with respect to C is

If S(w) = (az+b)/(cz+d) and T(w) = (-dw+b)/(cw-a) then S^-1 =

Elementary linear transformations are

An arc z = z(t) is rectifiable if and only if

The arc length of a circle equals



If S is a linear transformation, then S(-d/c) is