private static function checkParams(array $A): bool
    {
        if (empty($A)) {
            throw new Exception\BadDataException('Array data not provided for Matrix creation');
        }

        if (isset($A[0]) && is_array($A[0])) {
            $column_count = count($A[0]);
            foreach ($A as $i => $row) {
                if (count($row) !== $column_count) {
                    throw new Exception\MatrixException("Row $i has a different column count: " . count($row) . "; was expecting $column_count.");
                }
            }
        }

        return true;
    }