ELI5: Explain Like I'm 5

Chowla–Selberg formula

Okay, kiddo, imagine you have many candies in a jar, and you want to count how many ways you can share them with different groups of friends. You can do this by adding up all the possible ways you can split the candies between the groups.

Now, imagine that instead of candies, we have special numbers called "modular forms". These numbers are special because they have some interesting properties that mathematicians like to study. Using the chowla-selberg formula, we can count how many ways we can split these modular forms into different groups.

But wait, how do we actually calculate this? Well, instead of looking at the modular forms directly, we use some fancy math tools called "theta functions" to help us do the counting. These tools are like a secret code that helps us unlock the information we need.

Once we have the theta functions, we can plug them into the chowla-selberg formula and voila - we get an answer telling us how many ways we can split the modular forms into groups!

It's a bit tricky to wrap your head around, but basically the chowla-selberg formula is a powerful tool that helps us understand more about these cool mathematical objects called modular forms.