ELI5: Explain Like I'm 5

Elliptic hypergeometric series

Okay, imagine that you have a bunch of different colored marbles in a jar. If you want to count all the different ways you can pick a certain number of marbles, you can use something called a "hypergeometric series." It's kind of like a mathematical formula that can help you figure out how many different combinations of marbles you can have.

Now, imagine that instead of just different colors of marbles, they also have different sizes and shapes. That makes things a bit more complicated, right? Well, an "elliptic hypergeometric series" is like a special version of that formula that can handle different sizes and shapes too!

It's called "elliptic" because the formula uses something called "elliptic functions," which are kind of like squiggly lines that repeat over and over. These squiggly lines help the formula account for all the different shapes and sizes of the marbles, so you can still figure out how many different combinations there are even with all that extra complexity.

So, basically, an elliptic hypergeometric series is like a fancy math formula that helps you count how many different combinations of things you can have, even when those things have different shapes and sizes. It's super useful for solving all sorts of problems in math and physics!