Contraposition, Computer Engineering

Contraposition :

The contraposition equivalence is as follows: 

1638_Contraposition.png

So it may seem a small strange at first, this means that it appears which we have said nothing in the first sentence about ¬Q, than how can we infer anything from it in the second sentence? Moreover, suppose we know something that P implies Q, and we saw that Q was false. So there in this case, if we were to imply that P was true, so, is just that we know P implies Q and we also know that Q is true. If it so, Q was false! Thus we cannot possibly imply there that P is true, that means there we must imply that P is false because we are in propositional logic thus P must be either true or false. So we can say this argument shows there, we can replace the first sentence by the second one so it is left as an exercise to construct a similar argument for the vice-versa part of this similarity.

Posted Date: 1/11/2013 5:42:56 AM | Location : United States







Related Discussions:- Contraposition, Assignment Help, Ask Question on Contraposition, Get Answer, Expert's Help, Contraposition Discussions

Write discussion on Contraposition
Your posts are moderated
Related Questions
What is the draw back of micro programmed control? It leads to a slower operating speed because of the time it takes to fetch microinstructions from the control store.

(a)  Explain in a few sentences the difference between a natural frequency and a resonant frequency.  Also clarify why for a specific system or component these frequencies may diff

Software QA includes the whole software development PROCESS - improving and monitoring the process, making sure that any agreed-upon standards and processes are followed, and ensur

1. Write the function makegrid. This function accepts a width and height and creates a grid/matrix of cells. The width gives the number of columns and the height the number of rows

advantages of lfu

Object Oriented Programming 1. Describe that in how many ways the Data can be passed to functions? Explain with the help of one example. 2. Describe how you create class a

Explain Transport Layer of OSI Model. The transport layer utilizes the services provided through the network layer, as best path selection and logical addressing, to give end

Magento uses PHP as a web server scripting language and the MySQL Database. The data model is based on the Entity-attribute-value model that stores data objects in tree structures,

What are the important tools of a three-tier client server? In a three-tier or multi-tier environment, there the client implements the presentation logic or the client. The bus

Consider the situation in which the disk read/write head is currently located at track 45 (of tracks 0-255) and moving in the positive direction. Assume that the following track re