IARC - No. NTP - No. OSHA - No. Reproductive Information: Reproductive effects cited in 'Registry of Toxic Effects of Chemical Substances' for Sodium Sulfate. Teratology (Birth Defect) Information: Mutation data cited in 'Registry of Toxic Effects of Chemical Substances' for Sodium Sulfate.
Similar terms in algebra, sometimes referred to as like terms, are terms that contain the same variables raised to the same power. In algebraic expressions, terms cannot be combined unless they are similar terms.
Formalist definitions identify mathematics with its symbols and the rules for operating on them. Haskell Curry defined mathematics simply as the science of formal systems. A formal system is a set of symbols, or tokens, and some rules telling how the tokens may be combined into formulas.