In eduladder you can Ask,Answer,Listen,Earn and Download Questions and Question papers.

Watch related videos of your favorite subject.

Connect with students from different parts of the world.

Apply or Post Jobs, Courses ,Internships and Volunteering opportunity. For FREE

See Our team

Wondering how we keep quality?

Got unsolved questions? Ask Questions

GATE
GMAT
CBSE
NCERT
Career
Interview
Railway
UPSC
NID
NIFT-UG
NIFT-PG
PHP
AJAX
JavaScript
Node Js
Shell Script
Research

## Consider the first-order logic sentence φ ≡ ∃s∃t∃u∀v∀w∀x∀y ψ(s,t, u, v, w, x, y) where ψ(s,t, u, v, w, x, y) is a quantifier-free first-order logic formula using only predicate symbols, and possibly equality, but no function symbols. Suppose φ has a model with a universe containing 7 elements. Which one of the following statements is necessarily true?

Asked On2019-05-29 11:21:55 by:vivekEdu

Taged users:

Likes:

Be first to like this question

Dislikes:

Be first to dislike this question

Talk about this Like Dislike

Download question setAnswersAnswer

- A.Quick logic review -

Isα $\alpha $ true for domain ofx $x$, I can always give you y $y$ that is less than your number x $x$.

all integers?, Yes it is true. You pick any numberIsα $\alpha $ true for domain of{0,1,2,3,…} $\{0,1,2,3,\dots \}$ ? No, it is not true. (You pick any number x $x$) If you pick 0 $0$ then I can not give you y $y$ which is less than 0 $0$.

Non Negative integersDefinition ofModel $\text{Model}$ - α $\alpha $,

Domainfor which my sentence is true. For above sentenceall integersis model and there can be many other models, like -real numbers.(Definition ofCo Model $\text{Co Model}$-

Domainfor which my sentence is False.)Likes:

Be first to like this answer

Dislikes:

Be first to dislike this answer

Talk about this Like Dislike

## You might like this video:Data Flow on the Internet

Watch more here

## Watch more videos from this user Here

Learn how to upload a video over here

Lets together make the web is a better placeWe made eduladder by keeping the ideology of building a supermarket of all the educational material available under one roof. We are doing it with the help of individual contributors like you, interns and employees. So the resources you are looking for can be easily available and accessible also with the freedom of remix reuse and reshare our content under the terms of creative commons license with attribution required close.

You can also contribute to our vision of "Helping student to pass any exams"with these.Answer a question:You can answer the questions not yet answered in eduladder.How to answer a questionCareer:Work or do your internship with us.Work with usCreate a video:You can teach anything and everything each video should be less than five minutes should cover the idea less than five min.How to upload a video on eduladder