MathPHP\SetTheory\SetAxiomsTest::dataProviderForThreeSets PHP Метод

    public function dataProviderForThreeSets()
    {
        return [[new Set([]), new Set([]), new Set([])], [new Set([1]), new Set([]), new Set([])], [new Set([]), new Set([]), new Set([1])], [new Set([1]), new Set([1]), new Set([1])], [new Set([1]), new Set([2]), new Set([2])], [new Set([2]), new Set([1]), new Set([1])], [new Set([1]), new Set([2]), new Set([3])], [new Set([2]), new Set([1]), new Set([1, 4])], [new Set([1, 2, 3, 'a', 'b']), new Set([1, 'a', 'k']), new Set([1, 9])], [new Set([1, 2, 3, 'a', 'b', new Set([1, 2])]), new Set([1, 'a', 'k']), new Set([34, 40])], [new Set([1, 2, 3, 'a', 'b']), new Set([1, 'a', 'k', new Set([1, 2])]), new Set([1, 9, 33])], [new Set([1, 2, 3, 'a', 'b', new Set()]), new Set([1, 'a', 'k', new Set([1, 2])]), new Set([1, new Set([1, 2])])], [new Set([1, 2, 3, 'a', 'b', new Set([1, 2])]), new Set([1, 'a', 'k', -2, '2.4', 3.5, new Set([1, 2])]), new Set([1, new Set([1, 2])], 99)]];
    }