Top
Back: coneViaPoints
Forward: cone related functions
FastBack: User defined types
FastForward: fan
Up: cone
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

4.23.2 coneViaInequalities

Syntax:
coneViaInequalities( intmat IE )
coneViaInequalities( intmat IE, intmat E )
coneViaInequalities( intmat IE, intmat E, int flags )
Type:
cone
Purpose:
cone consisting of all points x, such that IE*x >= 0 in each component and (if stated) E*x = 0; inequalities and (if stated) equations will be transformed, getting rid of redundancies; flags may range between 0,..,3 defining an upper and lower bit (0=0*2+0, 1=0*2+1, 2=1*2+0, 3=1*2+1), if higher bit is 1, then program assumes each inequality yields a facet, if lower bit is 1, then program assumes the kernel of E is the span of the cone, if either bit is 0, then program computes the information itself.
Example:
 

Top Back: coneViaPoints Forward: cone related functions FastBack: User defined types FastForward: fan Up: cone Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 3-1-6, Dec 2012, generated by texi2html.