ELI5: Explain Like I'm 5

Cyclically ordered group

A cyclically ordered group is a group that has a certain order to the way its elements are arranged. It's like putting all the group's elements in a line and knowing which one comes first, which one comes next, and so on.

Imagine you have a handful of different colored blocks, and you want to arrange them in a line. You might put the green block first, then the red block after that, then the blue block, and so on. This is a way of putting the blocks in order.

A cyclically ordered group works the same way, but instead of blocks, you have mathematical elements like numbers. You might have a group of numbers like {1,2,3,4,5}. To put them in order, you might start with 1, then move on to 2, and keep going until you get to 5.

But with a cyclically ordered group, you don't just have a set order like {1,2,3,4,5}. You also have rules that tell you things like "if you start with 1 and add 2, the next number is 3." These rules make sure that, no matter how you arrange the elements in the group, you always know the right order to put them in.

So, in summary, a cyclically ordered group is a group of mathematical elements that are arranged in a specific order, and that order is determined by rules that make sure the elements always follow a set pattern.