Hypertext Help with LaTeX
Binary and relational operators
Some "math" symbols are obtained by typing the corresponding keyboard character. Examples include
+ - = < >
Note: plus, minus, and equal sign may be used in either text or math mode, but < and > are math mode only (they produce inverted exclamation and question marks, respectively, in text mode).
The following commands may be used only in math mode.
- \pm - plus or minus sign
- \mp - minus or plus sign
- \times - times (an "x")
- \div - divided by sign
- \ast - an asterisk (centered)
- \star - a five-point star (centered)
- \bullet - a bullet
- \circ - an open bullet
- \cdot - a centered dot (see also, \cdots)
- \leq - less than or equal to
- \ll - much less than
- \subset - is a subset of
- \geq - greater than or equal to
- \gg - much greater than
- \equiv - equivalence symbol
- \sim - similar to
- \simeq - similar or equal to
- \approx - approximately equal to
- \neq - not equal to
- \per - "perpendicular to" symbols
- \propto - proportional to
Note that "greater than" and "less than" are obtained simply by entering > and <.
A slash, indicating "not" can be placed through a symbol (or a letter) with the \not command. For example, not less than is
and not less than or equal to is
If the slash isn't properly positioned it can be moved by putting a math mode spacing command between the \not and the symbol.
Revised 7Jul 1995.