shh.homolalg
Interface ExactCategoryObj

All Superinterfaces:

Obj

All Known Implementing Classes:

CochainCx, Qvsp

public interface ExactCategoryObj

extends Obj

An object in an exact category. See ExactCategoryMorphism for facts about exact categories.

Author:

Mark McConnell

Method Summary

ExactCategoryMorphism	getZeroMorphism(ExactCategoryObj source) Returns the zero morphism from source to this.
boolean	isZero() Whether this is a zero object.

Methods inherited from interface Obj

getIdMorphism

Method Detail

isZero

public boolean isZero()

Whether this is a zero object.

getZeroMorphism

public ExactCategoryMorphism getZeroMorphism(ExactCategoryObj source)

Returns the zero morphism from source to this.