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Thank you very much. Maybe we got different outputs. I am surprised at it. I attached the generated pdf file. The "Eqs." is separated into two lines, and so is "Eberly". It is really strange.

Hi,

I wrote something with MikTeX + WinEdt, and found the hyphenation is very strange. For example, "Eqs." is printed as "E-qs.", the name "Eberly" becomes "E-berly". Are these hyphenation correct? Could anyone help me fix them? Thank you.

Below are the texts.

\documentclass[pra,twocolumn ...

Hi, I want to know how to replace an underbrace by an upward arrow. Thanks.