[Tex/LaTex] Change font size of an align environment

alignequationsfontsize

In a document, I'd like to change the font size of a single align environment (not globally throughout the document). What is the proper way to do this? I've been using

Preceding paragraph.
{\tiny
    \begin{align}
        a &< b
    \end{align}
}
Following paragraph.

But this seems to cause some weird artifacts (e.g., an unwanted indentation at the beginning of the following paragraph).

Best Answer

Insert a % symbol after closing the group with \tiny:

{\tiny
}%
Following paragraph.

Otherwise the line break in the source is treated like a space, which causes that small indentation of the following paragraph.

Furthermore, consider adjusting the spacing around that align environment. The spacing before and after a displayed math environment with smaller font could be made smaller than a normal one. Such changes have only local effect because of the grouping by braces.

For example:

Preceding paragraph.
{\tiny  
  \setlength{\abovedisplayskip}{6pt}
  \setlength{\belowdisplayskip}{\abovedisplayskip}
  \setlength{\abovedisplayshortskip}{0pt}
  \setlength{\belowdisplayshortskip}{3pt}
  \begin{align}
      a &< b
  \end{align}
}%
Following paragraph.
Related Question