Problema 2 OJM 2009

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Radu Titiu
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Problema 2 OJM 2009

Post by Radu Titiu »

Fie \( A \) un inel comutativ cu \( n \) elemente, \( n\geq 2 \). Sa se arate ca urmatoarele afirmatii sunt echivalente:
a) \( x^2=x \), \( \forall x\in A \);
b) Numarul functiilor polinomiale \( f^{~}:A \to A \) este \( n^2 \).

Bogdan Vioreanu, GMB 1/2009
A mathematician is a machine for turning coffee into theorems.
enescu
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Post by enescu »

Iata ce inseamna tehnologie avansata :) observati data si ora postarii... http://www.mathlinks.ro/viewtopic.php?p=1428396#1428396
Bogdan Enescu
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