(1) "∧" means and is equivalent to the intersection in a set. 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 the rest are false propositions.

(2) "∨" 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.

2. In fuzzy mathematics, the symbol ∧ indicates the operation of taking the minimum value, whereas ∨ indicates the operation of taking the maximum value.

That is, for any a, b∈{0, 1}, there are:

a∧b=min {0， 1}=0

a∨b=max {0， 1}= 1

Third, define the transformation function. For example, if the function f(t) satisfies the Fourier transform condition, its Fourier transform can be defined as λ f (t).

Extended data:

The nature of intersection (∧):

(1) If the intersection of two sets A and B is empty, they are said to have no common elements. = ? .

For example, the set {1, 2} and {3,4} do not intersect, and the writing {1, 2} ∩ {3,4} =? .

(2) The intersection of an arbitrary set and an empty set is an empty set, that is, A∩? =? .

(3) More generally, the intersection operation can be performed on multiple sets at the same time.

For example, the intersection of sets a, b, c and d is A∩B∩C∩D=A∩[B∩(C? ∩D)]. The intersection operation satisfies the associative law, that is, a ∩ (b ∩ c) = (a ∩ b) ∩ c c.

(4) The most abstract concept is the intersection of any nonempty set. If m is a non-empty set and its elements are also sets, then? x？ Belong to? m？ The intersection of if and only if for any? m？ Elements of? a，x？ Belong to? Answer.

This concept is the same as the above idea, such as A∩B∩C? The intersection of sets {A, b, C} is (m? Sometimes it's clear when it's empty, please see the empty intersection)

The symbol of this concept sometimes changes. Set theory theorists sometimes use "∩M" and sometimes "∩A∈MA". The latter writing can be summarized as "∩i∈IAi", which means the set {Ai|i? ∈? I} intersect. Here? Me? It's not empty, Ai Is it one? Me? Belong to? Me? Collection of.