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

Instruction set architecture - computer architecture, Instruction Set Archi...

Instruction Set Architecture:                             Instruction set architecture cycle-it is smallest unit of time in a processor. superscalar processor

Explain step by step switching system with neat diagram, With the help of a...

With the help of a neat diagram explain a step by step switching system. Configuration of a step by step switching system: A step by step switching system may be constr

Dic, draw 4 bit binary to gray code

draw 4 bit binary to gray code

What is the demand of mobile application developers, Desktop based IT appli...

Desktop based IT application is present but the mobile is future. All the applications that were made to work only on counter top are being ported to mobile. In the coming 10 years

Explain variable-partition contiguous storage allocation, Explain the conce...

Explain the concept of variable-partition contiguous storage allocation. Suppose that we have 1024K main memory available in that 128K is occupied through operating system pro

Main features of TCP, The main features of TCP are: Reliability: TCP...

The main features of TCP are: Reliability: TCP makes sure that any data sent by a sender arrives at destination as it was sent. There can't be any data loss or change in the

Requirements of decision support system, Q. Requirements of decision suppor...

Q. Requirements of decision support system? a) Fast computation A decision maker is able to perform a large number of computations very quickly and that too at a low cost

State the hardware faults and softwate faults, State the hardware faults an...

State the hardware faults and softwate faults - protection against hardware faults could be to keep backups or use GFS; use of UPS (in case of power loss) and parallel system a

What is open database connectivity, What is Open Database Connectivity (ODB...

What is Open Database Connectivity (ODBC) It happens that in addition to conventional or most popular database management systems, many companies go for proprietary software c

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