poissonBracket : Expression(Float) -> Expression(Float) ->
Expression(Float)
poissonBracket f g == D(f,q) * D(g,p) - D(f,p) * D(g,q)
Just a warning. In SPAD this means
poissonBracket f g is the same as poissonBracket(f(g)).
In this example q and p have type SYMBOL. Does it mean I need
something like a constructor for SYMBOL that would take INT as an
argument? Some kind of function INT -> SYMBOL.
(1) -> )display op subscript
There is one exposed function called subscript :
[1] (Symbol,List(OutputForm)) -> Symbol from Symbol
You can easily turn an integer into a proper second argument for that
function.
(1) -> subscript(x,[1::OutputForm])
(1) x
1
Type: Symbol
Ralf
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