sub(-)

X - Y

X and Y is a scalar/pair/vector/matrix/set. If one of X and Y is a pair/vector/matrix, the other is a scalar or a pair/vector/matrix of the same size.

Return the result of element-by-element subtracting Y from X. If both X and Y are sets, sub returns a set by eliminating the common elements of X and Y from X.

4:5-2;
// output
2 : 3

4:5-1:2;
// output
3 : 3

x=1 2 3;
x-1;
// output
[0,1,2]

1 sub x;
// output
[0,-1,-2]

y=4 5 6;
sub(x,y);
// output
[-3,-3,-3]

m1=1..6$2:3;
m1;

m-2;

m2=6..1$2:3;
m2;

m1-m2;

x=set([5,3,4]);
y=set(8 9 4 6);
x-y;
// output
set(3,5)
y-x;
// output
set(6,9,8)