awdiagcub.cpp File Reference

A program for the computation of the Alexander-Whitney diagonal for cubical complexes, using Serre's formula. More...

#include <istream>
#include <ostream>
#include "chomp/system/config.h"
#include "chomp/system/textfile.h"
#include "chomp/system/timeused.h"
#include "chomp/system/arg.h"
#include "chomp/struct/hashsets.h"
#include "chaincon/cubcell.h"
#include "chaincon/awdiagcub.h"
#include "comphom.h"
#include "awdiag2d.h"

Go to the source code of this file.

Functions
int	main (int argc, char *argv[])
	The main procedure of the program.
Variables
const char *	title
	The title of the program and licensing information.
const char *	helpinfo
	Brief help information on the program's usage.

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Detailed Description

A program for the computation of the Alexander-Whitney diagonal for cubical complexes, using Serre's formula.

Definition in file awdiagcub.cpp.

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Function Documentation

int main	(	int	argc,
		char *	argv[]
	)

The main procedure of the program.

Returns: 0 = Ok, -1 = Error, 1 = Help displayed, 2 = Wrong arguments.

Definition at line 84 of file awdiagcub.cpp.

References helpinfo, and title.

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Variable Documentation

const char* helpinfo

Initial value:

"\
This program computes the Alexander-Whitney diagonal for 2-dimensional\n\
homology generators, and represents the result in terms of 1-dimensional\n\
homology genrators. In other words, this program decomposes cavities\n\
into products of cycles.\n\
The ring of coefficients is set to Z_2, the integers modulo 2.\n\
Call with:\n\
filename - the name of a file that contains a list of cubical cells,\n\
Switches and additional arguments:\n\
-ddiag - display the A-W diagonal of each 2D homology generator,\n\
-aN - homology algorithm: 0 = old (very slow), 1 = new without additional\n\
optimization (relatively fast), 2 = new (default), 3 = using the SNF.\n\
--verify - do additional verification of the computed A-W diagonal,\n\
--log filename - save the output to a file (without progress indicators),\n\
--quiet - suppress data output to the screen (whcih can be still logged),\n\
--help - display this brief help information only and exit.\n\
For more information please consult the accompanying documentation\n\
or ask the program's author at http://www.PawelPilarczyk.com/."

Brief help information on the program's usage.

Definition at line 58 of file awdiagcub.cpp.

Referenced by main().

const char* title

Initial value:

"\
Alexander-Whitney diagonal for cubical complexes (Serre's formula).\n\
Version 0.01 (Apr 4, 2011). Copyright (C) 1997-2011 by Pawel Pilarczyk.\n\
This is free software. No warranty. Consult 'license.txt' for details."

The title of the program and licensing information.

Definition at line 52 of file awdiagcub.cpp.

Referenced by main().