dp_hm, dp_ht, dp_hc, dp_rest

dp_hm(dpoly)

:: Gets the head monomial.

dp_ht(dpoly)

:: Gets the head term.

dp_hc(dpoly)

:: Gets the head coefficient.

dp_rest(dpoly)

:: Gets the remainder of the polynomial where the head monomial is removed.

return

dp_hm(), dp_ht(), dp_rest() : distributed polynomial dp_hc() : number or polynomial

dpoly

distributed polynomial

• These are used to get various parts of a distributed polynomial.
• The next equations hold for a distributed polynomial p.

  p = dp_hm(p) + dp_rest(p)

  dp_hm(p) = dp_hc(p) dp_ht(p)

[87] dp_ord(0)$
[88] X=ptozp((a46^2+7/10*a46+7/48)*u3^4-50/27*a46^2-35/27*a46-49/216)$
[89] T=dp_ptod(X,[u3,u4,a46])$                                        
[90] dp_hm(T);                                                        
(2160)*<<4,0,2>>
[91] dp_ht(T);
(1)*<<4,0,2>>
[92] dp_hc(T);
2160
[93] dp_rest(T);
(1512)*<<4,0,1>>+(315)*<<4,0,0>>+(-4000)*<<0,0,2>>+(-2800)*<<0,0,1>>
+(-490)*<<0,0,0>>

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