MathPHP\SetTheory\SetAxiomsTest::testIntersectionAssociative PHP Метод

    public function testIntersectionAssociative(Set $A, Set $B, Set $C)
    {
        $A∩⟮B∩C⟯ = $A->intersect($B->intersect($C));
        $⟮A∩B⟯∩C = $A->intersect($B)->intersect($C);
        $this->assertEquals($A∩⟮B∩C⟯, $⟮A∩B⟯∩C);
        $this->assertEquals($A∩⟮B∩C⟯->asArray(), $⟮A∩B⟯∩C->asArray());
    }