Abstract: In this talk, arithmetic progressions on the integers and the integers modulo n are extended to graphs. This allows for the definition of the anti-van derWaerden number of a graph, which is ...

You may never have heard of modular arithmetic, but you use it every day without the slightest difficulty. In this system, numbers wrap around when they reach a certain size called the modulus; it ...

That's modular arithmetic, the modulus being 12. To add hours, we simply add them together: 9+5=14, and then subtract 12 to get 2. Months work the same: ...