Am I not supposed to use calculus outside of the United States if I learned it while living here? The concept of “where” you do or have a thing is well enshrin

Am I not supposed to use calculus outside of the United States if I learned it while living here? The concept of “where” you do or have a thing is well enshrined in law. Here for example knives that are perfectly legal to possess in your kitchen become illegal if you were to walk down the street holding one. It’s exactly the same with some forms of IP, these are often called “dual use” in legal terminology.