lt

lt(X, Y) or X<Y

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

If neither X nor Y is a set, return the element-by-element comparison of X<Y.

If both X and Y are sets, check if X is a proper subset of Y.

1 2 3 < 2;
// output
[1,0,0]

1 2 3<0 2 4;
// output
[0,0,1]

2:3<1:6;
// output
0 : 1

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

m1 lt 4;

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

m1<m2;

Set operation: If X<Y then X is a proper subset of Y

x=set(4 6);
x;
// output
set(6,4)
y=set(8 9 4 6);
y;
// output
set(6,4,9,8)

x<y;
// output
1

y<x;
// output
0

x<x;
// output
0
// x is not a proper subset of x