up previous next

3.3.6 Range Operator

If M and N are of type INT, then the expression: M .. N returns

* the list [M, M+1, ... , N] if M <= N;

* the empty list, [], otherwise.

Note: Large values for M and N are not permitted; typically they should lie in the range about -10^9 to +10^9.

If x and y are indeterminates in a ring, then x .. y gives the indeterminates between x and y in the order they appear in the definition of the ring.

Example

1..10; [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] ------------------------------- Use R ::= QQ[x,y,z,a,b,c,d]; z..c; [z, a, b, c] -------------------------------