ELI5: Explain Like I'm 5

Reeb foliation

Imagine you have a piece of paper and you draw a bunch of curly lines on it. These lines criss-cross each other but they never touch or overlap. This is what we call a "foliation." It's like a fancy way of saying "a bunch of lines all over a paper that don't touch each other."

Now, imagine that instead of straight lines, these are wavy lines that curl around in circles. These circles might look like the path that you take when you walk around a tree. When you draw these wavy circles on a paper, you get something called a "Reeb foliation."

It's called a Reeb foliation because the mathematician Georges Reeb came up with the idea. He thought about the way that these wavy lines could help us understand shapes and spaces. And from this idea, he created a whole field of math called topology.

What's cool about Reeb foliations is that they can help us understand how shapes are put together. And even though they look like a bunch of complicated lines, they're actually very organized and help us see patterns in the world around us.