On Wed, 06 Dec 2006 17:18:10 -0800, David Harvey
<[EMAIL PROTECTED]> wrote:
>
>
> On Dec 6, 2006, at 8:14 PM, David Joyner wrote:
>
>>
>> This is brilliant, IMHO.
>>
>>
>> On 12/6/06, William Stein <[EMAIL PROTECTED]> wrote:
>>>
>>> Sage calculus
>>> f = alg expr
>
> But what does "f = alg expr" mean? Do you mean using predefined
> single-character variables?
I mean this (which already works in SAGE):
sage: R.<x,y> = ZZ[x,y]; # would be x,y=vars('x,y'), which may or may
not be predefined.
sage: f = sin(x)*cos(x+y+2)
By algebraic expression I mean anything built up from certain
primitives using +,-,/,*,^, and maybe more (e.g., integral,
derivative, etc., I'm not sure). The structure for this is
already implemented in the sage/functions directory.
william
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