ELI5: Explain Like I'm 5

Coset enumeration

Okay kiddo, so let's say you have a bunch of toys, and you want to group them together based on how they look. Some toys might look similar, while others might look different.

Coset enumeration is kind of like grouping toys together based on their similarities. But instead of toys, we're talking about numbers! Specifically, we're talking about numbers that belong to a certain group.

Now let's say this group is like a big box of toys, but instead of toys, it's filled with numbers. And the group has a special rule that tells us how to combine those numbers together. For example, we might have to add or multiply the numbers in a certain way.

Now we want to figure out all the different ways we can group these numbers together. This is called coset enumeration!

To do this, we start with a special number called an identity element, which is like a toy that looks like all the other toys. This identity element is usually the number 1 or 0, depending on the group.

Next, we take a number from the group and combine it with the identity element using the group's special rule. This gives us a new number. We then take this new number and combine it with the identity element again, and so on. Each time we do this, we get a new number.

We keep doing this until we've gotten all the different possible combinations of the group and the identity element. Each of these combinations is called a coset.

So coset enumeration is really just a fancy way of counting all the different ways we can group the numbers in a certain group using the group's special rule and the identity element.