edu.jas.gb
Class Pair<C extends RingElem<C>>

java.lang.Object
  edu.jas.gb.AbstractPair<C>
      edu.jas.gb.Pair<C>

Type Parameters:

C - coefficient type

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Pair>

public class Pair<C extends RingElem<C>>
extends AbstractPair<C>
implements java.io.Serializable, java.lang.Comparable<Pair>

Serializable subclass to hold pairs of polynomials.

Author:

Heinz Kredel.

See Also:

Serialized Form

Field Summary

protected int	n
protected boolean	toZero
protected boolean	useCriterion3
protected boolean	useCriterion4

Fields inherited from class edu.jas.gb.AbstractPair

e, i, j, pi, pj

Constructor Summary

Pair(ExpVector lcm, GenPolynomial<C> a, GenPolynomial<C> b, int i, int j)
Pair constructor.

Pair(GenPolynomial<C> a, GenPolynomial<C> b, int i, int j)
Pair constructor.

Pair(java.lang.Object a, GenPolynomial<C> b, int i, int j)
Pair constructor.

Method Summary

int	compareTo(Pair p) compareTo used in TreeMap // not used at moment.
boolean	equals(java.lang.Object ob) equals.
int	getPairNumber() Get removed pair number.
boolean	getUseCriterion3() Get useCriterion3.
boolean	getUseCriterion4() Get useCriterion4.
boolean	isZero() Is reduced to zero.
void	pairNumber(int n) Set removed pair number.
void	setUseCriterion3(boolean c) Set useCriterion3.
void	setUseCriterion4(boolean c) Set useCriterion4.
void	setZero() Set zero reduction.
java.lang.String	toString() toString.

Methods inherited from class java.lang.Object

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

Field Detail

n

protected int n

toZero

protected boolean toZero

useCriterion4

protected boolean useCriterion4

useCriterion3

protected boolean useCriterion3

Constructor Detail

Pair

public Pair(java.lang.Object a,
            GenPolynomial<C> b,
            int i,
            int j)

Pair constructor.

Parameters:

a - polynomial i (must be castable to GenPolynomial<C>).

b - polynomial j.

i - first index.

j - second index.

Pair

public Pair(GenPolynomial<C> a,
            GenPolynomial<C> b,
            int i,
            int j)

Pair constructor.

Parameters:

a - polynomial i.

b - polynomial j.

i - first index.

j - second index.

Pair

public Pair(ExpVector lcm,
            GenPolynomial<C> a,
            GenPolynomial<C> b,
            int i,
            int j)

Pair constructor.

Parameters:

lcm - of lt(a) lt(b).

a - polynomial i.

b - polynomial j.

i - first index.

j - second index.

Method Detail

toString

public java.lang.String toString()

toString.

Overrides:

toString in class AbstractPair<C extends RingElem<C>>

pairNumber

public void pairNumber(int n)

Set removed pair number.

Parameters:

n - number of this pair generated in OrderedPairlist.

getPairNumber

public int getPairNumber()

Get removed pair number.

Returns:

n number of this pair generated in OrderedPairlist.

setZero

public void setZero()

Set zero reduction. The S-polynomial of this Pair was reduced to zero.

isZero

public boolean isZero()

Is reduced to zero.

Returns:

true if the S-polynomial of this Pair was reduced to zero, else false.

equals

public boolean equals(java.lang.Object ob)

equals.

Overrides:

equals in class java.lang.Object

Parameters:

ob - an Object.

Returns:

true if this is equal to o, else false.

compareTo

public int compareTo(Pair p)

compareTo used in TreeMap // not used at moment. Comparison is based on the number of the pairs.

Specified by:

compareTo in interface java.lang.Comparable<Pair>

Parameters:

p - a Pair.

Returns:

1 if (this < o), 0 if (this == o), -1 if (this > o).

setUseCriterion4

public void setUseCriterion4(boolean c)

Set useCriterion4.

Parameters:

c - boolean value to set.

getUseCriterion4

public boolean getUseCriterion4()

Get useCriterion4.

Returns:

boolean value.

setUseCriterion3

public void setUseCriterion3(boolean c)

Set useCriterion3.

Parameters:

c - boolean value to set.

getUseCriterion3

public boolean getUseCriterion3()

Get useCriterion3.

Returns:

boolean value.