Package edu.jas.gb
Class OrderedWordPairlist<C extends RingElem<C>>
- java.lang.Object
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- edu.jas.gb.OrderedWordPairlist<C>
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- All Implemented Interfaces:
WordPairList<C>
public class OrderedWordPairlist<C extends RingElem<C>> extends java.lang.Object implements WordPairList<C>
Pair list management of word polynomials. Implemented using GenWordPolynomial, TreeMap and BitSet.- Author:
- Heinz Kredel
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Field Summary
Fields Modifier and Type Field Description protected boolean
oneInGB
protected java.util.List<GenWordPolynomial<C>>
P
protected java.util.SortedMap<Word,java.util.LinkedList<WordPair<C>>>
pairlist
protected int
putCount
protected java.util.List<java.util.BitSet>
red
protected WordReduction<C>
reduction
protected int
remCount
protected GenWordPolynomialRing<C>
ring
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Constructor Summary
Constructors Constructor Description OrderedWordPairlist()
Constructor.OrderedWordPairlist(GenWordPolynomialRing<C> r)
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description WordPairList<C>
create(GenWordPolynomialRing<C> r)
Create a new WordPairList.boolean
criterion3(int i, int j, Word eij)
GB criterium 3.java.util.List<GenWordPolynomial<C>>
getList()
Get the list of polynomials.boolean
hasNext()
Test if there is possibly a pair in the list.int
put(GenWordPolynomial<C> p)
Put one Polynomial to the pairlist and reduction matrix.int
put(java.util.List<GenWordPolynomial<C>> F)
Put all word polynomials in F to the pairlist and reduction matrix.int
putCount()
Get the number of polynomials put to the pairlist.int
putOne()
Put the ONE-Polynomial to the pairlist.int
putOne(GenWordPolynomial<C> one)
Put the ONE-Polynomial to the pairlist.int
remCount()
Get the number of required pairs removed from the pairlist.WordPair<C>
removeNext()
Remove the next required pair from the pairlist and reduction matrix.java.lang.String
toString()
toString.
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Field Detail
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P
protected final java.util.List<GenWordPolynomial<C extends RingElem<C>>> P
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pairlist
protected final java.util.SortedMap<Word,java.util.LinkedList<WordPair<C extends RingElem<C>>>> pairlist
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red
protected final java.util.List<java.util.BitSet> red
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ring
protected final GenWordPolynomialRing<C extends RingElem<C>> ring
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reduction
protected final WordReduction<C extends RingElem<C>> reduction
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oneInGB
protected boolean oneInGB
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putCount
protected int putCount
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remCount
protected int remCount
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Constructor Detail
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OrderedWordPairlist
public OrderedWordPairlist()
Constructor.
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OrderedWordPairlist
public OrderedWordPairlist(GenWordPolynomialRing<C> r)
Constructor.- Parameters:
r
- word polynomial factory.
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Method Detail
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create
public WordPairList<C> create(GenWordPolynomialRing<C> r)
Create a new WordPairList.- Specified by:
create
in interfaceWordPairList<C extends RingElem<C>>
- Parameters:
r
- word polynomial ring.
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toString
public java.lang.String toString()
toString.- Specified by:
toString
in interfaceWordPairList<C extends RingElem<C>>
- Overrides:
toString
in classjava.lang.Object
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put
public int put(GenWordPolynomial<C> p)
Put one Polynomial to the pairlist and reduction matrix.- Specified by:
put
in interfaceWordPairList<C extends RingElem<C>>
- Parameters:
p
- polynomial.- Returns:
- the index of the added polynomial.
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put
public int put(java.util.List<GenWordPolynomial<C>> F)
Put all word polynomials in F to the pairlist and reduction matrix.- Specified by:
put
in interfaceWordPairList<C extends RingElem<C>>
- Parameters:
F
- word polynomial list.- Returns:
- the index of the last added word polynomial.
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removeNext
public WordPair<C> removeNext()
Remove the next required pair from the pairlist and reduction matrix. Apply the criterion 3 to see if the S-polynomial is required.- Specified by:
removeNext
in interfaceWordPairList<C extends RingElem<C>>
- Returns:
- the next pair if one exists, otherwise null.
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hasNext
public boolean hasNext()
Test if there is possibly a pair in the list.- Specified by:
hasNext
in interfaceWordPairList<C extends RingElem<C>>
- Returns:
- true if a next pair could exist, otherwise false.
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getList
public java.util.List<GenWordPolynomial<C>> getList()
Get the list of polynomials.- Specified by:
getList
in interfaceWordPairList<C extends RingElem<C>>
- Returns:
- the polynomial list.
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putCount
public int putCount()
Get the number of polynomials put to the pairlist.- Specified by:
putCount
in interfaceWordPairList<C extends RingElem<C>>
- Returns:
- the number of calls to put.
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remCount
public int remCount()
Get the number of required pairs removed from the pairlist.- Specified by:
remCount
in interfaceWordPairList<C extends RingElem<C>>
- Returns:
- the number of non null pairs delivered.
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putOne
public int putOne(GenWordPolynomial<C> one)
Put the ONE-Polynomial to the pairlist.- Parameters:
one
- polynomial. (no more required)- Returns:
- the index of the last polynomial.
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putOne
public int putOne()
Put the ONE-Polynomial to the pairlist.- Specified by:
putOne
in interfaceWordPairList<C extends RingElem<C>>
- Returns:
- the index of the last polynomial.
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criterion3
public boolean criterion3(int i, int j, Word eij)
GB criterium 3.- Returns:
- true if the S-polynomial(i,j) is required.
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