"∧" means ∧, which is equivalent to the intersection of sets. The true value of the proposition P∧Q is related to the true values of P and Q. When both P and Q are true propositions, the proposition P∧Q is true and others are false propositions.
"∨" means or, which is equivalent to the union of sets. The truth value of the proposition P∨Q is also related to the truth values of P and Q. When both P and Q are false propositions, the proposition P∨Q is false and the rest are true propositions.
Extended data:
Logical sum multiplication
In the multiplication principle, the independent variable is the necessary condition for the dependent variable to be established, and the definition of logic is exactly the same as the description of the multiplication principle, so it corresponds to logic and multiplication.
Or logical sum addition
The independent variable in addition principle is a sufficient condition for the dependent variable to be established, or the definition of logic is exactly the same as that described by addition principle, so either logic corresponds to addition.
Multiplication is a generalized AND operation, and addition is a generalized OR operation. The AND operation can be regarded as a special case of multiplication. Or logical operation can be regarded as a special case of addition.
In a word, multiplication principle and addition principle can be regarded as quantitative expressions of AND logic or logic; Logic and OR logic can be regarded as the qualitative expression of multiplication principle and addition principle.