Singular Manual: intmat expressions

| ### 4.8.2 intmat expressions An intmat expression is: an identifier of type intmat a function returning intmat an intmat operation involving ints and int operations (`+`, `-`, `*`, `div`, `%`) an expression involving intmats and the operations (`+`, `-`, `*`) a type cast to intmat (see intmat type cast) Example:
      intmat Idm[2][2];
      Idm +1;          // add the unit intmat
    ==> 1,0,
    ==> 0,1
      intmat m1[3][2] = _,1,-2;  // take entries from the last result
      m1;
    ==> 1,0,
    ==> 0,1,
    ==> 1,-2
      intmat m2[2][3]=1,0,2,4,5,1;
      transpose(m2);
    ==> 1,4,
    ==> 0,5,
    ==> 2,1
      intvec v1=1,2,4;
      intvec v2=5,7,8;
      m1=v1,v2;         // fill m1 with v1 and v2
      m1;
    ==> 1,2,
    ==> 4,5,
    ==> 7,8
      trace(m1*m2);
    ==> 56
See Type conversion and casting; number.

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