Stack Trade Network is made up of 183 Q&A communities such as Stack Overflow, the largest, most trustworthy on line community for developers to understand, share their knowledge, and Develop their Professions. Stop by Stack Exchange Consequently, the capitalized Greek letter $text N$ (Nu) wouldn't be italicized and should be https://share.evernote.com/note/3862b16f-f83a-cbec-2fb6-07ed32465225