[Axiom-developer] [#43 when is broken] (new)

[Bill Page]

The NAG interpreter and the Axiom interpreter do not
accept the when and otherwise verbs when defining
piecewise functions.

There are no library operations named 'when'

\begin{axiom}
ch : Integer -> UnivariatePolynomial(x,FRAC(INT))
ch(0) == 1
ch(1) == x
ch(n) == 2 * x * ch(n-1) - ch(n-2) when n > 1
ch(2)
\end{axiom}

The parser is broken
--
forwarded from http://page.axiom-developer.org/zope/mathaction/address@hidden