Please join us for this week's Mathematics Colloquium with special guest speaker Dr. Walden Freedman, HSU's Department of Mathematics to present Perplex vs. Complex on Thursday, October 11, 2018, BSS Room 204, 4 pm. An event flier is attached!

Abstract: Perplex numbers are a kind of alternative to complex numbers. They are numbers of the form x + j y, where j is not a real number, but satisfies j2 = 1. Like the complex numbers C, the perplex numbers P are in one-to-one correspondence with the points in the xy-plane with x + j y corresponding to the point (x, y). We will see how P differs from C, use Mathematica to explore some of the elementary functions on P, and see what holomorphic functions are like in this setting. A familiarity with the complex plane and complex functions will be helpful to audience members.