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

What is low-level formatting, What is low-level formatting?  Before a d...

What is low-level formatting?  Before a disk can store data, it must be divided into sectors that the disk controller can read and write. This process is known as low-level for

Cisc approach - cisc architecture, CISC Approach - CISC architecture: ...

CISC Approach - CISC architecture: The main goal of CISC architecture is to finish a task in as few lines of assembly as possible as. This is gain by building processor hardwa

Explain about the term false path, Explain about the term false path? How i...

Explain about the term false path? How it find out in circuit? What the effect of false path in circuit? By timing all the paths into the circuit the timing analyzer can find o

Important terms related to systems, Purpose, Environment, Boundary, Inputs,...

Purpose, Environment, Boundary, Inputs, and Outputs are a number of important terms related to Systems. A System's objective/purpose is the reason for its existence and refe

What are the main functions of sound cards, Q. What are the main functions ...

Q. What are the main functions of sound cards? Sound card (The card is frequently directly built into motherboards these days) is a board that has digital to analog sound conve

Assembly language programming, I need help to create test cases for the MIP...

I need help to create test cases for the MIPS Instruction set architecture

Choosing a micro-controller, There are many different forms of micro-contro...

There are many different forms of micro-controller and a manufacturer, selecting the proper micro-controller for your application is one of the critical decisions which controls th

Asp.net, in asp project is i have to crate database every time when i move ...

in asp project is i have to crate database every time when i move my project on different server

Advantages of instruction set architecture, Advantages of Instruction set a...

Advantages of Instruction set architecture: Stack Advantages : it is simple Model of expression evaluation (reverse polish). Contain Short instructions. Disadvanta

What is a semaphore, What is a semaphore? Semaphore: It is a protecte...

What is a semaphore? Semaphore: It is a protected variable or abstract data type that constitutes the typical method for restricting access to shared resources as shared memo

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