Music is the "logical expression" of feelings, a "symbolic form".

But their teaching is merely the logical expression of an enormous amount of conservative feeling.

If a logical expression is hard to understand, try transforming it.

The two spiders in the example correspond to the following logical expressions:

The adder has been replaced by a four input logical expression at each bit.

Finally, the result is an R-diagram that can be converted back into a simpler logical expression.

-o means a logical or of a complex expression.

The logical expressions describing the system's behavior are transformed into the disjunctive normal form.

De Morgan's Laws, specifically the ability to generate the dual of any logical expression.

They can then be processed with algebraic or logical expression to control the behavior of the design.