What 'fundamental laws' are you talking about? I don't think the vagueness helps with your question!
With regard to mathematics, the axioms of any particular field are in some sense arbitrary. We could have chosen (and can choose) different ones if we liked; we'd just get a different set of valid inferences and so a different 'mathematics'. The same is true of formal logic, and there are 101 different logics with different rules of inference, valid sentences etc. Which one(s) you take to be 'true' is a strange question to think about.