A statement or equation that is always true (or always false)
Examples of Closed Sentences:• 3 + 3 = 6 (always true)• 5 is greater than 6 (always false)
数学辞典收录了1200条数学词条,基本涵盖了常用数学知识及数学英语单词词组的翻译及用法,是数学学习的有利工具。