It's a logical conclusion. The answer is yes it's possible. We have a math function that defines atoms. Atoms can be simulated. If all things are made of atoms

It's a logical conclusion. The answer is yes it's possible. We have a math function that defines atoms. Atoms can be simulated. If all things are made of atoms then all things can be simulated. If all things can be simulated then YES all things can be defined by a mathematical function including the brain. In fact, it's been done already. Researchers have already simulated part of a mouse brain. The reason why they can't do humans is only scale. Humans have far more neurons so it's harder to do a brute force copy and the computing budget is more larger. See the Blue brain project, it's actually old news. https://www.epfl.ch/research/domains/bluebrain/ https://www.epfl.ch/research/domains/bluebrain/