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2) If (1+x) is an idempotent in Zn; Show that (n-x) is an idempotent

2) If (1+x) is an idempotent in Zn; Show that (n-x) is an idempotent

Advanced Engineering Mathematics
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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1) In an Integral domain, Show that the right cancellation law holds 2) If (1+x) is an idempotent in Zn; Show that (n-x) is an idempotent Scanned with CamScanner 3) Given a commutative ring with unity 1 in R; where R is a ring with two maximal ideals M₁ and M₂. Show that i) if le M₁ then M₁ = R ii) M₁ M₂ contains NO non-zero idempotent element. 4) Let : Z--------->Z20 such that (x)= 16x ; Show whether is a ring homomorphism or not 5) Let D= {0, 1, x1, x2, ....x10} be a finite Integral domain with xi # xj. Show that D is a Field.
Transcribed Image Text:1) In an Integral domain, Show that the right cancellation law holds 2) If (1+x) is an idempotent in Zn; Show that (n-x) is an idempotent Scanned with CamScanner 3) Given a commutative ring with unity 1 in R; where R is a ring with two maximal ideals M₁ and M₂. Show that i) if le M₁ then M₁ = R ii) M₁ M₂ contains NO non-zero idempotent element. 4) Let : Z--------->Z20 such that (x)= 16x ; Show whether is a ring homomorphism or not 5) Let D= {0, 1, x1, x2, ....x10} be a finite Integral domain with xi # xj. Show that D is a Field.
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