Their method of dictionary storage (a minimal acyclic deterministic finite automaton) enables them to apply the substitutions and to check the results very rapidly.
This is needed because both esc -calculus and the encoding into ambients implicitly use such a mathematical structure and not a substitution of general shape.
Those countries that stayed at this import industrialization substitution stage stagnated economically.
The phoneme substitution task was related to reading in all the language groups.
One begins with a finite alphabet and a substitution rule which is used to define a space of symbolic sequences.
Differences among nucleotide sequences were due to insertions/deletions of 1- 6 nucleotides and substitution events.
We conclude this section with some definitions that formalise this notion of nonreplaceable variable and the related notion of a closing substitution.
With scalar-variable application defined, we can lift the application of a substitution to general types with no difficulty.
