Ω constant: This symbol is often used to represent the power when inputting mathematical formulas on the computer, because it is inconvenient to input the power. For example, the fifth power of 2 is usually expressed as 2 5. On some calculators, this symbol is used to represent power.
Discrete mathematical symbol
Universal quantifiers and universal propositions.
├ determinant (formula can be proved by L).
Satisfier (formula is valid on e, and formula can be satisfied on e).
p & lt= & gtq? The equivalence relation between proposition p and q.
P =>q Proposition The implication relationship between P and Q (P is a sufficient condition for Q, and Q is a necessary condition for P).