Math includes the study of non computable things. Also, Math includes chaos theory which is more than just a formal system.
EX: computable numbers are a subset of all numbers. http://en.wikipedia.org/wiki/Computable_number
Re:Foundations of Computer Science
by RockyMcNuts on Tuesday June 25, 2013 @07:39AM
(#5938720)
mostly kidding. but presumably the theorems about non-computable numbers are computable and therefore you're still working with computable things?
Mathematics is the study of formal systems, eg proofs that can be derived from axioms using algorithms, i.e. a specific type of computable system.
Therefore, mathematics is a subset of computer science.