Given A finite set Σ of symbols a subset of Σ* specified by some set of rules is called a(n)

The ordering on cross products of partially ordered sets by requiring every coordinate to obey its set's partial order is called the  partial __ order.

The text substitution method that rotates letters to others by a fixed value (mod26) was invented by

In the definition of a finite state automaton, O means

Which of the following describes 3 × 4 correctly?

The acronym RPN means/is equivalent to

A relation R  on a set S is reflexive if 

In a rooted tree, a node or vertex other than the root that has degree one is called a

| The automorphism group of C₆| = 

Given G is any group and e is the identity, which of the following are aways true