Okay, sweetie, let me explain to you what ADM formalism means in a way that even a 5-year-old can understand.
When we talk about ADM formalism, we're talking about a way to describe how space and time work together. You see, space and time are connected, and they help us understand how things move and change over time.
But sometimes, it's hard to explain how everything works together. That's where ADM formalism comes in. It's like a special language that helps us talk about space and time in a very specific way.
This language uses something called "metric tensors" to describe how space and time are related. Think of it like a map that tells you how far two places are from each other. Just like you might use a map to figure out how to get from your house to your best friend's house, scientists use metric tensors to figure out how things are connected in space and time.
But don't worry if this sounds too complicated - the important thing to understand is that ADM formalism helps scientists study how everything in the universe is connected. By using this special language, they can better understand how things move, change, and evolve over time.