The simplest algebraic language, denoted . If is the alphabet , then is the set of words of which satisfy

1. , where is the numbers of letters in the word , and

2. if is factored as , where and are words of , then .

The simplest algebraic language, denoted . If is the alphabet , then is the set of words of which satisfy

1. , where is the numbers of letters in the word , and

2. if is factored as , where and are words of , then .

Weisstein, Eric W. "Dyck Language." From
*MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/DyckLanguage.html