3.2.2 Sets
To define a set of elements, put the elements separated by commas,
with delimiters %{ and
%}
or set[ and ].
or:
In the Xcas output, the set delimiters are displayed
as ⟦ and ⟧ in order
not to confuse sets with lists (see Section 3.2.3).
For example, ⟦ 1,2,3⟧ is the set %{1,2,3%},
unlike [1,2,3] (normal brackets) which is the list [1,2,3].
or:
or:
Remark.
The order in a set is not significant and the elements in a set are
all distinct. If you input B:=%{5,5,6,3,4%} and
C:=%{3,4,5,3,6%}, then B==C will return true.
See Section 6.4 for operations on sets.