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I have an equation that contains the \inf symbol and which I would like to add it in italics mode. When I add in my latex code the following: $\inf$ the result is not in italics though. How, can I set this command in italics?

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    \inf does not produce a "symbol". Instead, it produces the letters i, n, and f in upright (aka "roman") letters. If you looking to typeset the infinity symbol, you should be typing \infty. In fine math typography, all "operators" -- cf det, ln, log, max, min, sin, cos, tan, sup, exp, etc -- are always typeset using upright letters. This is done precisely to help distinguish them from letters that denote variables, which are generally typeset in math-italics.
    – Mico
    Commented May 4, 2020 at 12:16
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    Why would you? Traditionally, the “inf” operator is written upright.
    – egreg
    Commented May 4, 2020 at 12:16

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