string-properties

Consider a context-free grammar G with the following 3 rules. S → aS, S → aSbS, S → c Let w ∈ L(G). Let n_a(w), n_b(w), n_c(w) denote the number of times a, b, c occur in w, respec...

Consider a context-free grammar $G$ with the following 3 rules. $S \rightarrow aS, \ S \rightarrow aSbS, S \rightarrow c$ Let $w \in L(G)$. Let $n_a(w)$, $n_b(w)$, $n_c(w)$ denote...