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 NPTEL >> Courses >> Mathematics >> Number Theory (Web) >> Introduction
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 Question: Is this course suitable for F.Y. engineering student? Can you please tell which book with a good number of illustrative examples on number theory can be used? Please, can you post the link where video lectures on number theory can be found? How will it help for students studying computer science By: Kamble Nupur     Date: 2012-08-27 Answer: Hi, The course does not require any prerequisite, and is very basic, so is suitable for the first year engineering students too. You can look at the books by David Burton or by Niven-Zuckerman-Montgmmery which contain lots of examples. I think Prof. Sudhir Ghorpade of IIT Bombay is preparing a video course on Number Theory, which may be uploaded soon. I think primality testing, factorization methods and cryptography may be specially of interest to students of computer science. By: Dr. Anupam Saikia     Date: 2012-09-14

 Question: There is an error in section 2 of lecture 1. Specifically, there is a typo in the proof of Bezout\'s lemma wherein the author has erroneously left out q, the quotient, from the equation: a(1-x)+b(-y) = r. Many regards, Robin Joshi Southeastern Louisiana University. By: RobinJoshi     Date: 2013-02-27 Answer: Thanks for pointing out the error which actually occurs in lecture 2 rather than lecture 1. The correct expression would be r=a-dq=a-q(ax_{0}+by_{0})=a(1-qx_{0})+b(-qy_{0}) in place of r=a-dq=a-(ax_{0}+by_{0})=a(1-x_{0})+b(-y_{0}). By: Dr. Anupam Saikia     Date: 2013-03-18
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