So a few days ago my friends thinks up a way to describe whether a point is contained inside a closed curve using a certain integral to measure the angle swept out at a point from another point traveling around the curve. It looked cool so he told me about it and I thought it could be related to a simpler complex contour integral, which I did.
Then we started reading stuff on Wikipedia and discovered that he had without knowledge come up with the definition of the winding number, and my conversion to a complex contour integral is a standard representation which is described on the same page.
So yeah, kinda cool and kinda disappointing.
I wonder whose bright idea it was to name a condom brand “Trojan”.
When I hear the word “Trojan”, what comes to mind is the story where the mighty city of Troy doesn’t want to let in hundreds of little male soldiers into its walls, but lets in a horse instead because they think it’s safe. Of course the horse contains the many male soldiers, and once inside it springs a leak and lets the soldiers out to screw over the city.
Doesn’t seem like the best image for condoms.