Propositional truth tables, Computer Engineering

Assignment Help:

Propositional truth tables:

There {X\t} is a substitution that replaces all occurances of variable X with a term representing an object t as: 

  • ∀X. A is true if and only if A.{X\t} for every one t in Δ
  • ?X. A is true if and only if A.{X\t} for at any rate one t in Δ

 

By repeating this for all the quantifiers than we get a set of ground formulae in which we have to check that if the original sentence is true or false. But unfortunately, we don't have specified there that our domain Δ is finite -  like in example we see that it may contain the natural numbers -  but there may be a infinite number of sentences to check for a given model! So there may be also be an infinite number of models. And although we have a proper definition of model hence a proper semantics for first-order logic and we can't rely on having a finite number of models like we did where drawing propositional truth tables.


Related Discussions:- Propositional truth tables

Calculating block size - computer architecture, Calculating Block Size: ...

Calculating Block Size: B A unit of associatively -one tag for B A words B T unit of transfer-B T words to/from primary memory as a unit             One valid bit for

Assessing heuristic searches , Assessing Heuristic Searches: Given a p...

Assessing Heuristic Searches: Given a particular problem you want to build an agent to solve, so there may be more than one way of justifying it as a search problem, more than

Explain what is data mining, What is data mining? Data Mining: It...

What is data mining? Data Mining: It is an analytic process designed to explore data and after that to validate the findings through applying the detected patterns to lat

Identify the fastest logic gate, Which of the following is the fastest logi...

Which of the following is the fastest logic ECL, TTL, CMOS or LSI ? Ans. The fastest logic is ECL.

Compare electromechanical and electronic switching system, Compare electrom...

Compare electromechanical switching system with electronic switching system. Comparison of electromechanical switching system with electronic switching systemgiven below:

Rational schema, write the rational schema and draw it’s dependency diagram...

write the rational schema and draw it’s dependency diagram. Identify all dependencies.

Show the ranges of port numbers, Q. Show the ranges of Port numbers? P...

Q. Show the ranges of Port numbers? Port numbers are divided into three ranges: Well-known ports are those from 0 through 1,023. Registered ports are those from

Parallelism based on granularity size-granularity, Parallelism based on G...

Parallelism based on Granularity size Granularity:  Granularity or Grain size is a determine which measure how much computation is devoted in a process.Granularity size is

Explain about octal numbers system, Q. Explain about Octal Numbers system? ...

Q. Explain about Octal Numbers system? An octal system has 8 digits signified as 0,1,2,3,4,5,6,7. For finding equal decimal number of an octal number one has to find quantity o

What is the difference between strong ai and weak ai, Strong AI makes the b...

Strong AI makes the bold claim that computers can be made to think on a level (at least) equivalent to humans. Weak AI only states that some "thinking-like" features can be added t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd