Singular Manual: chinrem

  | ### 5.1.8 chinrem `Syntax:` `chinrem (` list, intvec `)` `chinrem (` list, list `)` `chinrem (` intvec, intvec `)` `Type:` the same type as the elements of the first argument If the elements of the first argument are lists again, chinrem is applied recursively. `Purpose:` applies chinese remainder theorem to the first argument w.r.t. the moduli given in the second. The elements in the first list must be of same type which can be `bigint`/`int`, `poly`, `ideal`, `module`, `smatrix` or `matrix`. The moduli, if given by a list, must be of type `bigint` or `int`. If data depending on a ring are involved, the coefficient field must be `Q`. `Example:`
        chinrem(intvec(2,-3),intvec(7,11));
      ==> 30
        chinrem(list(2,-3),list(7,11));
      ==> 30
        ring r=0,(x,y),dp;
        ideal i1=5x+2y,x2+3y2+xy;
        ideal i2=2x-3y,2x2+4y2+5xy;
        chinrem(list(i1,i2),intvec(7,11));
      ==> _[1]=-9x+30y
      ==> _[2]=-20x2-6xy-18y2
        chinrem(list(i1,i2),list(bigint(7),bigint(11)));
      ==> _[1]=-9x+30y
      ==> _[2]=-20x2-6xy-18y2
        chinrem(list(list(i1,i2),list(i1,i2)),list(bigint(7),bigint(11)));
      ==> [1]:
      ==>    _[1]=-9x+30y
      ==>    _[2]=-20x2-6xy-18y2
      ==> [2]:
      ==>    _[1]=-9x+30y
      ==>    _[2]=-20x2-6xy-18y2
See modstd_lib.

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