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Let f ∈ ℚ [X] be a polynomial without multiple roots and with deg(f) ≥ 2. We give conditions for f(X) = AX² + BX + C such that the Diophantine equation f(x)f(y) = f(z)² has infinitely many nontrivial integer solutions and prove that this equation has a rational parametric solution for infinitely many irreducible cubic polynomials. Moreover, we consider f(x)f(y) = f(z)² for quartic polynomials.
Yong Zhang. "Some observations on the Diophantine equation f(x)f(y) = f(z)²." Colloquium Mathematicae 142.2 (2016): 275-283. <http://eudml.org/doc/283797>.
@article{YongZhang2016, abstract = {Let f ∈ ℚ [X] be a polynomial without multiple roots and with deg(f) ≥ 2. We give conditions for f(X) = AX² + BX + C such that the Diophantine equation f(x)f(y) = f(z)² has infinitely many nontrivial integer solutions and prove that this equation has a rational parametric solution for infinitely many irreducible cubic polynomials. Moreover, we consider f(x)f(y) = f(z)² for quartic polynomials.}, author = {Yong Zhang}, journal = {Colloquium Mathematicae}, language = {eng}, number = {2}, pages = {275-283}, title = {Some observations on the Diophantine equation f(x)f(y) = f(z)²}, url = {http://eudml.org/doc/283797}, volume = {142}, year = {2016}, }
TY - JOUR AU - Yong Zhang TI - Some observations on the Diophantine equation f(x)f(y) = f(z)² JO - Colloquium Mathematicae PY - 2016 VL - 142 IS - 2 SP - 275 EP - 283 AB - Let f ∈ ℚ [X] be a polynomial without multiple roots and with deg(f) ≥ 2. We give conditions for f(X) = AX² + BX + C such that the Diophantine equation f(x)f(y) = f(z)² has infinitely many nontrivial integer solutions and prove that this equation has a rational parametric solution for infinitely many irreducible cubic polynomials. Moreover, we consider f(x)f(y) = f(z)² for quartic polynomials. LA - eng UR - http://eudml.org/doc/283797 ER -