Intersection¶

$ wo 'Intersection[{1, 2, 3, 4}, {2, 4, 6}]'
{2, 4}

$ wo 'Intersection[{a, b, c}, {b, c, d}]'
{b, c}

$ wo 'Intersection[{1, 2, 3}, {4, 5, 6}]'
{}

$ wo 'Intersection[{1, 2, 3}, {1, 2, 3}]'
{1, 2, 3}

$ wo 'Intersection[{1, 2, 3}, {2, 3}, {3}]'
{3}