cringsim.cpp File Reference

A program for the computation of the cohomology ring structure with the cup product, using algebraic minimal models for simplicial complexes. More...

#include "chaincon/stringhash.h"
#include "chomp/system/config.h"
#include "chomp/struct/hashsets.h"
#include "chaincon/simplex.h"
#include "chaincon/emptycell.h"
#include "chaincon/awdiagsim.h"
#include "cringmain.h"

Go to the source code of this file.

Functions
int	main (int argc, char *argv [])
	The main procedure of the program. More...

Variables
const char *	title
	The title of the program and licensing information. More...
const char *	helpinfo
	Brief help information on the program's usage. More...

Detailed Description

A program for the computation of the cohomology ring structure with the cup product, using algebraic minimal models for simplicial complexes.

Definition in file cringsim.cpp.

Function Documentation

main()

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 cringsim.cpp.

References helpinfo, and title.

Variable Documentation

helpinfo

const char* helpinfo

Initial value:

= "\
This program computes cohomology groups of a simplicial complex\n\
and the cup product of cohomology generators, yielding the ring structure.\n\
The ring of coefficients for cohomology computation can be either set to Z\n\
or to Z_p (the integers modulo prime number p).\n\
Call with:\n\
filename - the name of a file that contains a list of cubical cells,\n\
Switches and additional arguments:\n\
filename2 - the name of an additional file for relative (co)homology;\n\
-pN - selection of the coefficients: p=0 for Z, p>1 for Z_p (default: 0);\n\
\tnote: one should use p <= 181,\n\
-r - compute reduced homology (with the empty set as a cell of dim -1),\n\
-b - don't add boundary cells (use -bx and -ba for X and A selectively),\n\
-dpi, -dincl, -dphi - display the computed maps: pi, incl, phi,\n\
-dd - display the boundary map in the minimal model (the nontrivial part),\n\
--verify - do additional verification of the computed maps,\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 55 of file cringsim.cpp.

Referenced by main().

title

const char* title

Initial value:

= "\
Simplicial cohomology ring computation using a chain contraction.\n\
Version 0.03 (Sep 24, 2015). Copyright (C) 1997-2016 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 49 of file cringsim.cpp.

Referenced by main().