How does “δ:Q×Σ→Q” read in the definition of a DFA (deterministic finite automaton)?

δ is like a mathematical function called the transition function . Something like. z = f(x, y) A function in mathematical defines mapping of elements in one set to another set. In function set of input arguments are called Domain of a function and output is the rage. [ANSWER]    In expression “δ:Q×Σ → Q”, … Read more

Grammatical inference of regular expressions for given finite list of representative strings?

Yes, it turns out this does exist; what is required is what is known academically as a DFA Learning algorithm, examples of which include: Angluin’s L* L* (adding counter-examples to columns) Kearns / Vazirani Rivest / Schapire NL* Regular positive negative inference (RPNI) DeLeTe2 Biermann & Feldman’s algorithm Biermann & Feldman’s algorithm (using SAT-solving) Source … Read more