《自动机理论、语言和计算导论》学习第 7 天,p139-p171总结,总计 33 页。
一、技术总结1.reversalp139, The reversal of a string a1a2...an is the string written backwards, that is anan-1...a1.
2.homomorphismA string homomorphism is a function on strings that wokrs by substituting a particular string for each symbol。
二、英语总结1.contrapositive(1)contra: against, opposite, on the opposite side。
(2)contraposition:contra(against) position(to put, place), 。
(3)contrapositive:contrapositition -ive,adj. pertaining to contraposition。
2.dominant-dem*(house, household)。adj. more strong than anything else of the same type。
3.set-bracket{ }
三、其它四、参考资料1. 编程(1)Eric S.Roberts,《自动机理论、语言和计算导论(英文版.第3版)》:https://book.douban.com/subject/2274854/
2. 英语(1)Etymology Dictionary:https://www.etymonline.com
(2) Cambridge Dictionary:https://dictionary.cambridge.org
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