I found something interesting on the first day of my Intro to Fourier Analysis, in my lecture notes (the notes are actually part of a book that Dr. Howell is writing).

These lecture notes are copyrighted according to current copyright laws, and, as they say, “all rights reserved.” Any attempt to reproduce these notes for personal profit and without the author’s permission will be found rather amusing.¹

¹ CRC Press may bee less amused. They have an expert on copyright law enforcement. His name is “Spike.”