You can use the $ operator to return the expression sequence produced by substituting for i in expr the values m,m+1,...,n (or up to the last value not exceeding n).

If m>n then the NULL expression sequence is returned.

A call to $ in the form:  $ m..n will have the same effect as the call: i $ i = m..n.

A call to $ in the form:  expr $ n will have the same effect as the call: expr $ i = 1..n  (assuming that expr does not contain i).

Note:  It is recommended (and often necessary) that both 'expr' and 'i' be enclosed in single quotes to prevent premature evaluation. (If i had been assigned a value, the i in the expression would be evaluated to its value, and so could not be used as a counting variable.) The most common use is 'expr' $ 'i' = m..n.

For information on the end-of-parameters marker $\$$, see Parameter Declarations.

The $ operator is thread-safe as of Maple 15.

For more information on thread safety, see index/threadsafe.

$\mathrm{`\$`}\left(2..5\right)$

$2\,3\,4\,5$

$i^2\$\left(i\=\frac{2}{3}..\frac{8}{3}\right)$

$\frac{4}{9}\,\frac{25}{9}\,\frac{64}{9}$

$a_i\$\left(i\=1..3\right)$

$a_1\,a_2\,a_3$

$x\$4$

$x\,x\,x\,x$