Weierstrass's elliptic functions are a special type of mathematical function that can help us understand shapes that are called elliptic curves. Just like how we can draw circles and lines on a piece of paper, mathematicians can draw these special shapes that have certain properties.
Now, the functions themselves are a bit tricky, but we'll try to explain it simply. Basically, they're a type of function that has a very important property: they repeat themselves in a very specific way. Imagine you have a piece of paper with a pattern on it, and you put a copy of that pattern next to it. If you keep doing that over and over again, the pattern will repeat itself in a very predictable way.
In the same way, when we use these functions to study elliptic curves, we can see how the curve itself repeats in a predictable way. This is really important for understanding how these shapes work and for solving mathematical problems related to them.
So even though the functions might seem complicated, they're actually really useful for understanding shapes that are all around us in the world of math.