shh.csparse
Class UnivCoeff

Object
  UnivCoeff

public class UnivCoeff

extends Object

Given matrices δ¹ : C¹ → C² and δ⁰ : C⁰ → C¹ over Z defining a piece C² ← C¹ ← C⁰ of a cochain complex, the constructor prints out the cohomology H¹ with coefficients in both Z and the relevant F_p's, including generating cocycles. The δ's will be destructively altered.

Author:

Mark McConnell

Constructor Summary

UnivCoeff(CSparse delta1, CSparse delta0)
The constructor runs the jobs described in the comment on the class (UnivCoeff).

Method Summary

static void

main(String[] args) For testing the constructor.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UnivCoeff

public UnivCoeff(CSparse delta1,
                 CSparse delta0)

The constructor runs the jobs described in the comment on the class (UnivCoeff).

Throws:

IllegalArgumentException - If delta1 delta0 ≠ 0.

ClassCastException - If some entry in the deltas is not of class SparseEltZ.

RuntimeException - If some things go wrong internally.

Method Detail

main

public static void main(String[] args)

For testing the constructor. Give it 2 × 2 matrices δ¹ : C¹ → C² and δ⁰ : C⁰ → C¹ forming a cochain complex as in the comment on the class.

Parameters:

args - The four entries of δ¹ in row-major order, followed by the four entries of δ⁰ in row-major order.