So there's this tag even-and-odd-extensions. There are 16 questions with this tag which consist of: Even and odd functions Even and odd integers Even and odd digits of a number Extending a function to an even or odd function over $\mathbb{R}$ Something to do with the wave function From a bri...

There is an ongoing discussion on even-and-odd-extensions at The tag even-and-odd-extensions.

Do tiling and tessellation denote the same concept? If so, they should be merged.