[Numpy-discussion] PyDX - announcement
David M. Cooke
cookedm at physics.mcmaster.ca
Tue Oct 24 14:54:08 EDT 2006
On Oct 22, 2006, at 17:38 , Simon Burton wrote:
>
> Apologies if this is too off-topic for these lists, but
> I hope some people here find this interesting!
It looks very nifty. Interval arithmetic for rigourous bounds is
something that should be used more often, I think.
You should add it to the topical software list at http://
www.scipy.org/Topical_Software.
[and it's on topic, btw; announcements of Python numerical software
is always welcome here].
> PyDX - first public announcement
> ================================
>
> Overview
> --------
>
> PyDX is a package for working with calculus (differential
> geometry),
> arbitrary precision arithmetic (using gmpy), and interval arithmetic.
>
> It provides:
> * multivariate automatic differentiation (to arbitrary order)
> * Tensor objects for computations in differential geometry
> * Interval scalars (based on libMPFI) for calculating rigorous
> bounds
> on arithmetic operations (validated numerics).
> * Arbitrary order validated ODE solver.
>
> PyDX uses lazy computation techniques to greatly enhance
> performance of
> the resulting functions.
>
> This code grew out of a research project at The Australian National
> University,
> Department of Physics, which involved computing bounds on geodesics in
> relativistic space-time's.
--
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|David M. Cooke http://arbutus.physics.mcmaster.ca/dmc/
|cookedm at physics.mcmaster.ca
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