Permutation-group
noun
1.
a mathematical group whose elements are permutations and in which the product of two permutations is the same permutation as is obtained by performing them in succession.
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[per-nish-uh s] /pərˈnɪʃ əs/ adjective 1. causing insidious harm or ruin; ruinous; injurious; hurtful: pernicious teachings; a pernicious lie. 2. deadly; fatal: a pernicious disease. 3. Obsolete. evil; wicked. /pəˈnɪʃəs/ adjective 1. wicked or malicious: pernicious lies 2. causing grave harm; deadly adj. early 15c., from Middle French pernicios (13c., Modern French pernicieux) and directly […]
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[per-nish-uh s] /pərˈnɪʃ əs/ adjective 1. causing insidious harm or ruin; ruinous; injurious; hurtful: pernicious teachings; a pernicious lie. 2. deadly; fatal: a pernicious disease. 3. Obsolete. evil; wicked. /pəˈnɪʃəs/ adjective 1. wicked or malicious: pernicious lies 2. causing grave harm; deadly adj. early 15c., from Middle French pernicios (13c., Modern French pernicieux) and directly […]