[Tex/LaTex] How to use a special character as a math operator


I'd like to use \v{C} as a math operator. However, if I write $\v{C}_r(S)$ or define \DeclareMathOperator{\Cech}{\v{C}}, the \v{C} symbol does not get shown at all. What is the proper way to handle this?

Best Answer

\v(C) only works outside maths mode. For inside maths mode, use \check{C}. Thus (providing you are using the amsmath or mathtools packages), create your operator using:


and you can then do $\Cech_r(S)$ to get what you want.

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