Formal Language Theory (Flt) Is an Important Part of the Mathematics of Computers And
Contains an Extensive Corpus of Research Findings and Theorems on Rule-Based Generative Rule
Systems (Grs). Format Language Theory (Flt) Has a Wide Range of Applications, Including Computer
Programs, Music, Visual Patterns, Animal Vocalizations, Rna Structure, and Even Dance. In This Paper
Discuss the Chomsky Hierarchy, Languages With a Slightly Sensitive Context, Cognitive
Complexity, Languages Used In Subregular Conventions.