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

Explain SR latch using nor gates, Q. Explain SR Latch using NOR gates? ...

Q. Explain SR Latch using NOR gates? Let's inspect the latch more closely.   i. Suppose initially 1 is applied to S leaving R to 0 at this instance. The instant S=1 output o

Why does ethernet specify a minimum frame size, Why does Ethernet specify a...

Why does Ethernet specify a minimum frame size. Ethernet frame gives a minimum frame size of 46 bytes. Whereas a data field of zero byte is legal, this causes a problem. While

What is refactoring, What is refactoring? Refactoring is explained as t...

What is refactoring? Refactoring is explained as the changes to the internal structure of software to improve its design without changing its external functionality. It is an e

Define the message queues, The message queue provides the information about...

The message queue provides the information about sizes of queues under utilization of various processors. It points to size of every processor incoming message queue that would be

Elements of parallel computing and architecture, Elements of Parallel Compu...

Elements of Parallel Computing and Architecture  Parallel computing. Then we shall describe why we need parallel computing and what the heights of parallel processing are. We s

What is a digital comparator, What is a digital comparator? Ans: ...

What is a digital comparator? Ans: Digital Comparator: The comparison of two numbers is an operation which evaluates if one number is greater than, less than, or equival

Discuss the csma/cd and csma/ca protocols, Discuss the CSMA/CD and CSMA/CA ...

Discuss the CSMA/CD and CSMA/CA protocols. CSMA/CD: this is an access method used mainly with LANs configured in a bus topology. Along with CSMA/CD, any station (node) can se

Which scheduling in cpu is allocate for least cpu-burst time, The schedulin...

The scheduling in which CPU is allocated to the process with least CPU-burst time is called? Ans. Shortest job first Scheduling wherein CPU is allocated to the process with lea

Numbers square, Your professor wants you to fill a two-dimensional N by N m...

Your professor wants you to fill a two-dimensional N by N matrix with some numbers by following a specific pattern. According to his explanation as in the figure below, you have to

State about the internet services, State about the Internet services I...

State about the Internet services Internet services are provided automatically, in many other implementations the certificate is stored on a separate database or token such as

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