The name derives from the use of the left corner of the grammar's production rules.

A covariance model has seven types of states and production rules (Table 1).

Any particular sequence of production rules on the start symbol yields a distinct string in the language.

The difference between these types is that they have increasingly strict production rules and can express fewer formal languages.

Performance speed and accuracy improve as the learner implements these production rules.

Production systems may vary on the expressive power of conditions in production rules.

In such a simple system, the ordering of the production rules is crucial.

The major constraint on architecture was the decision to use production rules to represent knowledge.

The parameters can be used by the drawing functions, and also by the production rules.

However, I feel that it is because farmers receive public aid that they should, in return, respect a number of production rules.