Trying to align equal signs and get an error message saying

missing } inserted

I can't figure out what I've done wrong?

  • 4
    Welcome. Do not use dollar signs ($) inside an equation.
    – Johannes_B
    Dec 3 '15 at 16:28
  • Welcome to the site! And, equally, don't put $ ... $ around individual units elsewhere, either. In LaTeX we treat a mathematical expression/equation/etc. as a single unit and it should all go in math mode, with any text or anything else marked up as such. But it'd be super important to have, in general, $(b^nn^\alpha)^{-1}=\large\frac{a^n}{n^\alpha}$ (within align, which already puts you in math mode, you must not have the $ ... $). This treats the maths appropriately and will automatically handle things like correct spacing around the = sign
    – Au101
    Dec 3 '15 at 16:37
  • For more: tex.stackexchange.com/questions/255073/… Also, you probably want \dfrac, rather than \large, or - in general - to be in a display math environment
    – Au101
    Dec 3 '15 at 16:37
  • 1
    The title of your posting -- Problems with aligning equal signs -- doesn't seem to correspond to the equation you've provided, as there's only one = symbol in the entire expression. Please edit either the title or the body of the posting to provide more consistency.
    – Mico
    Dec 3 '15 at 17:45

It seems to me, as you should read some introductory material to LaTeX (see also this).

  (b^n n^\alpha)^{-1}
  &= \frac{a^n}{n^\alpha} \\

enter image description here

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