How do I get the tabular environment obtained from the following code indented from the left margin by \hspace{2em}?



\noindent The following sets have either a least upper bound or a greatest lower bound of 1. \\
\noindent \hspace*{2em}
\textbf{i.) }   &   $\displaystyle{\left\{1 - \frac{1}{n} \;\middle\vert\; n \in \mathbb{N}\right\}}$
\textbf{ii.) }  &   $\displaystyle{\left\{1 + \frac{1}{n} \;\middle\vert\; n \in \mathbb{N}\right\}}$ \\[1.2\normalbaselineskip]
\textbf{iii.) } &   $\displaystyle{\left\{9\sum_{n=1}^{N} \frac{1}{10^{n}} \;\middle\vert\; N \in \mathbb{N}\right\}}$
\textbf{iv.) }  &   $\displaystyle{\left\{1 - \left(\frac{1}{2}\right)^{n} \;\middle\vert\; n \in \mathbb{N}\right\}}$ \\[1.2\normalbaselineskip]
\textbf{v.) }   &   $\displaystyle{\left\{\sqrt[\uproot{1} \leftroot{-1} n]{2} \;\middle\vert\; n \in \mathbb{N}\right\}}$
\textbf{vi.) }  &   $\displaystyle{\left\{\sqrt[\uproot{1} \leftroot{-1} n]{n} \;\middle\vert\; n \in \mathbb{N}\right\}}$

  • 2
    \begin{tabular}{@{}r@{}lr@{}l}, using the leading @{} to cancel the \tabcolsep that normally goes there. Jan 4, 2017 at 15:11
  • @Mico You suggested using \middle\vert in the post "Proper inter-column spacing and vertical alignment in a tabular environment." I recall that this was a common typesetting practice in set-builder notation from older textbooks. Now, I see textbooks predominantly using \mid. I think that I prefer the older format. Jan 4, 2017 at 15:21
  • 1
    \displaystyle doesn't take an argument so \displaystyle{...} is the same as \displaystyle ... Jan 4, 2017 at 15:28
  • @David Carlisle Thanks. I did not know that. I will probably still use braces in order to separate the "e" in \displaystyle from an algebraic expression. I guess programmers just use a space character. Jan 4, 2017 at 16:35
  • I recommend you using a better interface such as tasks that has already been suggested to you at tex.stackexchange.com/questions/346974
    – egreg
    Jan 4, 2017 at 17:38

1 Answer 1

\noindent \hspace*{2em}

starts a paragraph with no indentation then adds three space tokens which produce three times a normal inter-word space, then the tabular starts, with the left edge of the tabular including .5in space.

You probably want

\noindent \hspace*{2em}%

which avoids the spaces or


which adds the space tokens in vertical mode where they are ignored

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