ELI5: Explain Like I'm 5

Determinantal conjecture

Ok, so imagine you have a big box of lego pieces. Each piece has a different shape and color. If you put some pieces together in a specific way, you can make a really cool lego airplane or a lego house.

Now, imagine you have a bunch of numbers instead of lego pieces. These numbers can also be put together in a specific way to create something cool. This is called a matrix.

The determinantal conjecture is about how to figure out if a matrix is special or not. To do this, we use something called the "determinant" of a matrix. Think of the determinant as a sort of key that tells us if the matrix is special or not.

If a matrix has a certain type of pattern in it, called a "principal submatrix," then the determinant will be a specific number. This number is always positive, which means the matrix is special. But if the matrix doesn't have this pattern, then the determinant could be positive or negative or even 0, which means the matrix isn't special.

The determinantal conjecture is a big math question. Mathematicians want to find out if there is a way to always know if a matrix is special or not, based on its determinants. They are still working on figuring it out, but they have some good ideas and have made a lot of progress.