Follow in their footsteps by showing that there are precisely (p+1) quadratic residues modulo Р whenever P is an odd prime. What about p = 2?
Follow in their footsteps by showing that there are precisely (p+1) quadratic residues modulo Р whenever P is an odd prime. What about p = 2?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
I am completely puzzled at the following question, so please if able write the steps with explanation, thank you in davance
Expert Solution
Step 1: Step 1
Consider the set of integers from 1 to p-1 (inclusive). This set contains p-1 integers.
Since p is an odd prime, we can pair up the residues into sets of two. For each quadratic residue x, there is a corresponding residue -x (which is also a quadratic residue since ).
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