### Greek Letters

Greek letters are produced in mathematics mode by preceding the name of the letter by a backslash \. Thus to obtain the formula one types A = \pi r^2.

Here are the control sequences for the standard forms of the lowercase Greek letters:-

There is no special command for omicron: just use o.

Some Greek letters occur in variant forms. The variant forms are obtained by preceding the name of the Greek letter by `var'. The following table lists the usual form of these letters and the variant forms:-

Upper case Greek letters are obtained by making the first character of the name upper case. Here are the control sequence for the uppercase letters:---