passed

chain2

W3C sample	WIRIS
	$\int_{0}^{1} f (x) ⅆ x = \sum_{i = 0}^{\infty} x_{i} = \prod_{i = 0}^{\infty} x_{i} = ∐_{i = 0}^{\infty} x_{i} = \oint_{0}^{1} f (x) ⅆ x = \iint_{0}^{1} f (x) ⅆ x = ∭_{0}^{1} f (x) ⅆ x$

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Author: Design Science, Inc. (E. Cannon, E. Tabacman, R.Miner)