LaTeX Latex code for the "not equivalent" symbol

AI Thread Summary
The discussion centers around the need for LaTeX code to produce a "not equivalent" symbol, specifically as referenced in Rotman's Abstract Algebra, Proposition 1.58, part (ii). The user seeks assistance in formatting this symbol correctly in their post. The provided LaTeX code, r\not\equiv r'\pmod{m}, successfully generates the desired output, demonstrating how to express the "not equivalent" relationship in modular arithmetic. Additional resources, such as StackExchange, are mentioned for further clarification on the topic.
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I have just posted on the Linear and Abstract Algebra forum ... and the post needs a "not equivalent" symbol as shown in Rotman's Proposition 1.58 part (ii) see below ...

Can someone please help with the latex code for this symbol?

PeterProposition 1,58 in Rotman's Abstract Algebra reads as follows:View attachment 4525
https://www.physicsforums.com/attachments/4526See Part (ii) of the above for the desired "not equivalent" symbol ...

Peter
 
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[m]r\not\equiv r'\pmod{m}[/m] gives $r\not\equiv r'\pmod{m}$. For slightly more information, see StackExchange.
 

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