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:::{{u|Sapphorain}}, after your edit the third paragraph is now nonsensical. --[[User:Joel B. Lewis|JBL]] ([[User_talk:Joel_B._Lewis|talk]]) 21:00, 10 June 2017 (UTC)
::: Also, this issue is not restricted to the lead. The section [[Arithmetic function#Neither multiplicative nor additive]] begins, "These important functions (which are not arithmetic functions) ...." --[[User:Joel B. Lewis|JBL]] ([[User_talk:Joel_B._Lewis|talk]]) 21:03, 10 June 2017 (UTC)
:::: Yes, they are not arithmetical functions because they are defined on real positive numbers. I just don't understand these two last objections. If most classical introductory courses define an arithmetical function as any function whose ___domain are the positive integers (I cited 3 books, as well as a UIUC course in the talk page), I don't very well see how this could not be mentioned at all in the lead. Not mentioning it is equivalent to giving a wrong information. [[User:Sapphorain|Sapphorain]] ([[User talk:Sapphorain|talk]]) 19:06, 11 June 2017 (UTC)
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