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 do you meant by static and dynamic modeling, Static modeling is used t...

Static modeling is used to state structure of the objects that are in the problem domain. These are expressed using class, object and USECASE diagrams. But Dynamic modeling sig

IEEE802, 1. (a) Given a baseband bus with station 1 located at 10m, station...

1. (a) Given a baseband bus with station 1 located at 10m, station 2 located at 1000m, and station 3 located at 1010 meters (see diagram above). If the data rate of the bus is 10 M

Give an example, Write the HTML code for the following table: ...

Write the HTML code for the following table: T E M P E R A T U R E C I T I E S

Why are binary, Q. Why are binary, octal and hexadecimal used for computer ...

Q. Why are binary, octal and hexadecimal used for computer applications? Q. Perform the following: (189.3) 10 = (?) 2

Define the term- analysis, Define the term- Analysis The analysis invol...

Define the term- Analysis The analysis involves some or all of the following stages: Fact finding - this is usually done in four ways. Understanding the current syst

Scanf function, How can the maximum field width for a data item be specifie...

How can the maximum field width for a data item be specified within a scanf function? When the program is executed, three integer quantities will be entered from the standard i

Why object oriented development not only allows reuse, Why object oriented ...

Why object oriented development not only allows reuse In a wider way we can say that object oriented development not only allows reuse and information sharing within an applica

Diffrentiate b/w shared memory and distributed memory, Shared Memory  ...

Shared Memory  Shared Memory refers to memory component of a computer system in which the memory can accessed directly by any of the processors in the system. Distributed

External report cannot be called, When calling an external report the param...

When calling an external report the parameters or select-options specified in the external report cannot be called.

Enumerate the design reusability of vhdl, Enumerate the Design reusability ...

Enumerate the Design reusability of VHDL VHDL.  Functions  and  Procedures  may  be  placed  in  a  package  so  that  they  are  available  to  any design-unit which wishes 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