Prove that $frac{Y}{X}$ is irreducible mod $Y^2-X^2(X+1)$












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If we write $frac{Y}{X} = frac{F}{G}$, do we necessarily have $X$ divide $G$ and $Y$ divide $F$?



If this can shed some light, I'm trying to find the set of poles of $frac{Y}{X}$ mod $Y^2-X^2(X+1)$, exercise 2.17 from Fulton's book on algebraic geometry, but I think the question is simpler than the content of the book. However I always end up having some big computations when trying to do those questions so I wonder if there are any tricks










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    0














    If we write $frac{Y}{X} = frac{F}{G}$, do we necessarily have $X$ divide $G$ and $Y$ divide $F$?



    If this can shed some light, I'm trying to find the set of poles of $frac{Y}{X}$ mod $Y^2-X^2(X+1)$, exercise 2.17 from Fulton's book on algebraic geometry, but I think the question is simpler than the content of the book. However I always end up having some big computations when trying to do those questions so I wonder if there are any tricks










    share|cite|improve this question

























      0












      0








      0







      If we write $frac{Y}{X} = frac{F}{G}$, do we necessarily have $X$ divide $G$ and $Y$ divide $F$?



      If this can shed some light, I'm trying to find the set of poles of $frac{Y}{X}$ mod $Y^2-X^2(X+1)$, exercise 2.17 from Fulton's book on algebraic geometry, but I think the question is simpler than the content of the book. However I always end up having some big computations when trying to do those questions so I wonder if there are any tricks










      share|cite|improve this question













      If we write $frac{Y}{X} = frac{F}{G}$, do we necessarily have $X$ divide $G$ and $Y$ divide $F$?



      If this can shed some light, I'm trying to find the set of poles of $frac{Y}{X}$ mod $Y^2-X^2(X+1)$, exercise 2.17 from Fulton's book on algebraic geometry, but I think the question is simpler than the content of the book. However I always end up having some big computations when trying to do those questions so I wonder if there are any tricks







      polynomials irreducible-polynomials minimal-polynomials






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      share|cite|improve this question










      asked Nov 29 '18 at 2:51









      Thomas

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