Hello, everyone: I have a bit of a strange question, but I am a writer and I'm writing a story about a college math student. What I'm in need of is an example of a question in Differential Geometry involving a "Submersion" (preferably a word problem), the process, and the solution. The math question will come to parallel the events in the main character's life. If anyone can give me an example of a question, process, and solution, it would be warmly appreciated. Please feel free to post on here, or e-mail me at email@example.com. Thanks, everyone! Jared S.