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### 8.6. Words in mathematics

#### 8.6.1. The \text command

Math font-changing commands such as \mathrm are not intended for putting normal text inside mathematics; even for single words this task is often best carried out with the \text command, which is similar to the LaTeX command \mbox but is much better, ensuring that the text is set using the correct font size. The font will be the text font in use outside the current mathematical material.

8-6-1

#### 8.6.2. Operator and function names

The names of many well-known mathematical functions (such as log and sin) and operators (such as max and lim) are traditionally typeset as words (or abbreviations) in Roman type so as to visually distinguish them from shorter variable names that are set in “math italic”. The most common function names have predefined commands to produce the correct typographical treatment; see Table 8.4. Most functions are available in standard LaTeX; those listed in blue in the table require loading amsmath. The functions marked with (l) may “take limits” in display formulas (see Section 8.4.4).

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