Cfrgtkky

I want to have equations below each other and want to verify the equations by using overset. I am using:

begin{align*} 

3 &= 3\

overset{text{...}}{&=}

end{align*}

But now i don't have the equations below each other because the &= command is not working anymore.
Any clues?

Thank you!

Here's how you can do, but the result is not really pretty, so I add a couple of suggestions.

documentclass{article}

usepackage{amsmath}



begin{document}



The following works

begin{align*}

3 &overset{hphantom{text{Chebyshev}}}{=} 3\

  &overset{text{Chebyshev}}{=} 1+2

end{align*}

but this is much better, in my opinion

begin{align*}

3 &= 3\

  &= 1+2 &&text{(Chebyshev)}

end{align*}

If less space is wanted, then you can do like this

begin{alignat*}{2}

3 &= 3\

  &= 1+2 &qquad&text{(Chebyshev)}

end{alignat*}



end{document}

Try

documentclass[a4paper,12pt]{article}

    usepackage{mathtools}

begin{document}

begin{align*} 

3 &= 3\

& phantom{} overset{a}{=}

end{align*}

end{document} 

Alternate

documentclass[a4paper,12pt]{article}

    usepackage{amsmath}

    usepackage{mathtools}

begin{document}

begin{align*} 

3  &= 3\

   &= b quad text{(Cauchy-Darboux)}

end{align*}

end{document}