C# 11.0 Generic Math is a powerful extension to the already capable generic types system present in C#. This blog post explains the changes needed to add this neat feature, including new interfaces and operations, checked operators, identity element and constants, conversions, dedicated functions, matrix definition and operations, parsing, beyond standard number types, performance, speed of development, runtime performance, summary, bonus physics, and sources. This post is part of the C# Advent Calendar 2022 and is expected to be one of the 50 awesome posts showcasing the digital/C#-oriented counterparts of an old German tradition.