# Library hierarchy, contd.

**Dylan Thurston
**
dpt@math.harvard.edu

*Fri, 25 May 2001 07:45:15 -0400*

Here's a concrete proposal for a Mathematics subtree. Following Jan
Skibinski's comment about linear algebra and some thought, I convinced
myself that there is no natural division between
numerical/computational libraries and more "pure" mathematics.
Description:
Mathematics
Libraries for mathematical structures or algorithms.
------
Mathematics
Prelude -- The so-called "numeric" hierarchy from
-- the H98 Prelude
Complex -- Standard H98
Ratio -- Standard H98
DSP
FastFourierTransform
Noise
Oscillator
LinearAlgebra -- Provides a simple-minded matrix implementation
Sparse
LUDecomposition -- Various algorithms/representations go here,
... -- Somebody help me with a good hierarchy.
DomainConstructor -- Mechveliani's library
ExactReal -- Various people have done good work here.
-- Unfortunately, no-one seems to have published
-- their source code in library format.