What do v and inverted v mean respectively? 1. Logical operation symbol.
(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).