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Cho S là ngoại diên của khái niệm con người, p(x,y) = x yêu thương y.

1) Viết các phán đoán sau đây dưới dạng công thức:
a) Nhiều người yêu thương A. (Thay A bằng chính tên của em).
b) A yêu thương nhiều người. (Thay A bằng chính tên của em).
2) Phủ định hai phán đoán ở phần 1) (viết dưới dạng câu văn hoàn chỉnh).

User Rafaella
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2 Answers

7 votes

Answer:

Explanation:

User Bob Davies
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1 vote

The question involves using logical quantifiers to express the statements "Many people love A" and "A loves many people" and their negations. The formulas are ∃x (p(x, A)) and ∃y (p(A, y)) for the original statements, and the negations are ¬∃x (p(x, A)) and ¬∃y (p(A, y)).

The question involves expressing statements about relationships using logical quantifiers and then finding their negations. Given S as the domain of humans and p(x, y) representing the statement "x loves y", we can write the formulas for the following statements:

a) Many people love A: ∃x (p(x, A))

b) A loves many people: ∃y (p(A, y))

The negation of these statements can be written as:

a) It is not the case that many people love A: ¬∃x (p(x, A)), which means no one loves A or everyone does not love A.

b) A does not love many people: ¬∃y (p(A, y)), implying A loves no one or A does not love everyone.

User Nisrine
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