User documentation
Frobby is a software system and project for computations with monomial ideals. Frobby is free software and it is intended as a vehicle for research on monomial ideals, as well as a useful practical tool for investigating monomial ideals.
Available functions:
long dimension(const ideal& I); ideal AlexanderDualFrobby(I, pp); ideal AlexanderDualFrobby(I); ideal MaximalStandardMonomialsFrobby(I); void IrreducibleDecompositionFrobby(std::vector<ideal>& components, I); void PrimaryDecompositionFrobby(std::vector<ideal>& components, I); void AssociatedPrimesFrobby(std::vector<ideal>& primes, I); RingElem MultigradedHilbertPoincareNumeratorFrobby(I); RingElem TotalDegreeHilbertPoincareNumeratorFrobby(I); RingElem TotalDegreeHilbertPoincareNumeratorFrobby(I, const RingElem& base);
Examples
Download and compile Frobby
**frobby** website |
CoCoALib requires Frobby release 0.9.0 or later. Download Frobby from the website.
IMPORTANT there are some minor mistakes in the frobby source code:
- insert the following two lines in frobby source files
main.cpp
andrandomDataGenerators.cpp
#include <sys/types.h>
#include <unistd.h>
- on line 143 of file
StatisticsStrategy.cpp
changempz_class
intompq_class
Now compile Frobby following the instructions in the Frobby release. NOTE: JAA says that to compile Frobby (0.8.2) on my machine I had to execute the following:export CFLAGS="-m64 -mtune=core2 -march=core2" # taken from gmp.h export LDFLAGS=$CFLAGS make library
make
might give some linking issues iflibgmpxx
is not installed systemwide. Anyway, for linking with CoCoA you only needmake library
.
Configure and compile CoCoALib with frobby
Look to see where the library file libfrobby.a
is -- on my computer
it was inside the Frobby subdirectory bin/
. Note the full path to
the library file as you will need it when configuring CoCoALib!
Then configure and compile CoCoALib typing
cd CoCoALib-0.99 ./configure --with-libfrobby=<your_path_to>/libfrobby.a make
Maintainer documentation
Bugs, shortcomings and other ideas
Currently Frobby is not really intended to be used as a library, so linking it with CoCoALib is not as simple as it could be. Hopefully this will soon change.
Main changes
2011
- 29 July: added (temporarily?)
Frobby
suffix to all functions - 5 July: modified AlexanderDualFrobby into AlexanderDualFrobby, PrimaryDecomposition into PrimaryDecompositionFrobby.
2010
- 1 October: first inclusion