Intro Complex Analysis, Lec 6, Exponential Map on Mathematica, Squaring Map, Intro to Topology

Lecture 6. (0:00) Mathematica project idea (the Riemann sphere and stereographic projection). (1:04) Quiz 2 possible due dates. (1:21) Enabling dynamic updating. (2:49) The real and imaginary parts of the complex exponential function (the complex exponential mapping), along with the corresponding real planar mapping. (4:40) Entering the function into Mathematica. (7:23) Animating the geometry of the mapping with Manipulate and ParametricPlot. (12:17) The image of a vertical line (at a fixed value of x) is a circle centered at the origin with radius e^(x). (17:45) The image of a horizontal line (at a fixed value of y) is a ray emanating from the origin (but not including the origin). (25:56) Other kinds of graphs that can be made in complex analysis. (32:44) Dynamic behavior of orbits under iteration of z^2 on Mathematica with NestList. (38:39) Preimages of mappings (of circles through the origin under z^2). (46:49) Modular surfaces of z^2 - 1 and z^2 + 1. (47:59) Overview of images of circles under the reciprocal map 1/z. (49:08) Quick introduction to the topology of the complex plane (focused on domains of typical functions being open and connected sets).

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