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2 Answered Questions for the topic Abstract

11/29/16

principal ideal ring

Suppose thatR=R1⊕R2⊕…….⊕Rnwhere each Ri is a principal ideal ring. Verify that R is also a principal ideal ring.   please I want help with that  

02/05/16

Prove Statement using the First Principle of Mathematical Induction

Prove the following statements using the First Principle of Mathematical Induction:(a) If r ≠ 1, then1 + r + r2 + ... + rn = (1 − rn+1)/(1-r) for all n ∈ N. Why does the formula not work when r =... more

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