MathPHP\SetTheory\SetAxiomsTest::testASymmetricDifferentBEqualsUnionADiffBAndBDiffA PHP Метод

    public function testASymmetricDifferentBEqualsUnionADiffBAndBDiffA(Set $A, Set $B)
    {
        $AΔB = $A->symmetricDifference($B);
        $A∖B = $A->difference($B);
        $B∖A = $B->difference($A);
        $⟮A∖B⟯∪⟮B∖A⟯ = $A∖B->union($B∖A);
        $this->assertEquals($AΔB, $⟮A∖B⟯∪⟮B∖A⟯);
        $this->assertEquals($AΔB->asArray(), $⟮A∖B⟯∪⟮B∖A⟯->asArray());
    }