3 added 4 characters in body

Complex Analysis: Holomorphic functions are just rotations and dilations up to the first order.

Hold on...

Calculus: Differentiation is approximation by a linear map.

2 correct a statement

Complex Analysis: Holomorphic functions locally just rotations and dilations up to the first order.

Hold on...

Calculus: Differentiation is approximation by a linear map.

Complex Analysis: Holomorphic functions locally just rotations and dilations.

Hold on...

Calculus: Differentiation is approximation by a linear map.