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8.9.14 dp_ptozp, dp_prim

dp_ptozp(dpoly)
:: Converts a distributed polynomial poly with rational coefficients into an integral distributed polynomial such that GCD of all its coefficients is 1.
dp_prim(dpoly)
:: Converts a distributed polynomial poly with rational function coefficients into an integral distributed polynomial such that polynomial GCD of all its coefficients is 1.

return
distributed polynomial
dpoly
distributed polynomial

 
[208] X=dp_ptod(3*(x-y)*(y-z)*(z-x),[x]);
(-3*y+3*z)*<<2>>+(3*y^2-3*z^2)*<<1>>+(-3*z*y^2+3*z^2*y)*<<0>>
[209] dp_ptozp(X);                       
(-y+z)*<<2>>+(y^2-z^2)*<<1>>+(-z*y^2+z^2*y)*<<0>>
[210] dp_prim(X);                        
(1)*<<2>>+(-y-z)*<<1>>+(z*y)*<<0>>

References
6.3.18 ptozp.



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