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Starting from this MWE,

\documentclass[a4paper,12pt]{article} \usepackage{amsmath,amssymb} \usepackage{newtxtext,newtxmath} \begin{document} \[\tilde{\dot{u}}=-i \omega \tilde{u}\] \[\widetilde{\dot{u}}=-i \omega \widetilde{u}\] \end{document} 

that produces this image:

enter image description here

reading this question, mathabx and mathtools: \widetilde{} and \dot{} problem, I was trying to understand if exists a symbol like \tilde, or \widetilde (without macro) that has more coverage than the u or another letter.

In fact, with the symbol \dot, you can see that \tilde is small and it has little coverage with the letter u. While if I use\widetilde it looks higher, than the dot, but too big in lenght.

1 Answer 1

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Reading very good the guide pag. 15 (I obviously didn't read it very well), http://tug.ctan.org/fonts/mtp2lite/texmf/doc/fonts/mtpro2/mtpro2.pdf

enter image description here

there are other commands: \wwhat, \wwtilde, etc.. I'm using these two in relation to my requests of my question. I am totally satisfied and here I have inserted my MWE hoping that it will be useful to someone.

enter image description here

\documentclass[a4paper,12pt]{article} \usepackage{amsmath,amssymb} \usepackage{newtxtext} \usepackage[lite]{mtpro2} \begin{document} \begin{equation} \tilde{\dot{u}}=-i \omega \tilde{u} \end{equation} \begin{equation} \widehat{\dot{u}}=-i \omega \widehat{u} \end{equation} \begin{equation} \widetilde{\dot{u}}=-i \omega \widetilde{u} \end{equation} \begin{equation} \wwhat{\dot{u}}=-i \omega \wwhat{u} \end{equation} \begin{equation} \wwtilde{\dot{u}}=-i \omega \wwtilde{u} \end{equation} \end{document} 

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