The tiled backgrounds which you find on my pages are of my creation. They use the same principle that is found in my MPEGs: The color of a given pixel is determined by the fractional value of a funtion of x and y. I have limited myself to four colors, and have used subdued colors which are more suited to backgrounds.

Why do they fit together, you may ask? I had the bright idea that if I never used x and y directly in my equations, but instead used only functions of the trig functions of x and y, and my unit square was one revolution on each side, then the squares would have to fit together.

I've done a lot of playing around creating these backgrounds, and I'm afraid I have lost track of the exact mathematical functions used to create each.

For your reference and your downloading ease, here are all the backgrounds I use, plus a few more which may find their way onto future pages, presented in their unit square form. You can click on these to get them, but you won't be seeing any more than you see here: these are at 100%.

You are most welcome to use these backgrounds for your pages, folks, but please

If you can't follow this simple request (which is right in my copyright statement no one ever seems to read), then go find some other cool backgrounds for your page. Believe me, there are zillions of them on the Net.
Sheesh! ... some people ...