449 views
0 votes
0 votes
what does it mean can any one explain with example

universe of discourse???

1 Answer

1 votes
1 votes

It may be helpful for you. consider the proposition: "All of my friends are either wealthy or clever."

Using predicates, we can symbolise this as:

∀ xfriend(x) ⇒ (wealthy(x) ∨ clever(x))


However, if we agreed that the variable x can only stand for one of my friends, then we could symbolise this more simply as:

∀ xwealthy(x) ∨ clever(x)


For a given propositional function P(x), the universe of discourse is the set from which the value of x may be chosen. Defining a universe of discourse can simplify the symbolisation of propositional functions. If a universe of discourse is not defined, then we shall have to assume that any object or individual may be substituted for x.

Related questions

2 votes
2 votes
1 answer
3
sukanya naskar asked Aug 26, 2017
247 views
Establish the validity of conclusion-If a person is well-paid, then he is an MBA or an MCA. If a person is not an MBA but an MCA ,he can go abroad frequently. Therefore, ...