The mathematical pun here is absolutely illogical! On the left, we have the famous Euler's identity (eiπ + 1 = 0), one of the most beautiful equations in mathematics. On the right is the "mirror universe" version with negative iπ. It's basically the Star Trek universe's evil twin of mathematical formulas!
What makes this brilliant is that both equations are actually mathematically equivalent! e-iπ = eiπ* = 1/eiπ = -1, so e-iπ + 1 = 0 still holds true. The beard doesn't change the math, but it definitely adds dramatic flair to the complex plane!