New posts in Formal Languages

How to create a grammar for complement of $a^nb^n$?

First-order logic without equality

If $L$ is regular, prove that $\sqrt{L}=\left\{ w : ww\in L\right\}$ is regular

Context-sensitive grammar for the copy language

Intersection of two deterministic finite automata?

Proving Grammar Correctness

Eilenberg's rational hierarchy of nonrational automata & languages

Is the inclusion of a regular language in a context-free language decidable?

Formalizations of the idea that something is a function of something else?

Representing mathematical statements as SAT instances