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Return to Grammar: Decidable and Undecidable Problems.

Grammar: Decidable and Undecidable Problems
Grammar <math>w \in L(G)</math> <math>L(G) = \phi</math> <math>L(G) = \Sigma^*</math> <math>L(G_1) \subseteq L(G_2)</math> <math>L(G_1) = L(G_2)</math> <math>L(G_1) \cap L(G_2) = \phi</math>
Regular Grammar D D D D D D
Det. Context Free D D D UD ? UD
Context Free D D UD UD UD UD
Context Sensitive D UD UD UD UD UD
Recursive D UD UD UD UD UD
Recursively Enumerable D UD UD UD UD UD