org.jscience.physics.relativity
Class Rank4Tensor

java.lang.Object
  extended by org.jscience.physics.relativity.Tensor
      extended by org.jscience.physics.relativity.Rank4Tensor
All Implemented Interfaces:
java.io.Serializable, Member
Direct Known Subclasses:
LeviCivita

public class Rank4Tensor
extends Tensor

The Rank4Tensor class encapsulates 4th rank tensors.

See Also:
Serialized Form

Field Summary
protected  double[][][][] rank4
          DOCUMENT ME!
 
Constructor Summary
Rank4Tensor()
          Constructs a 4th rank tensor.
 
Method Summary
 Rank4Tensor add(Rank4Tensor t)
          Returns the addition of this tensor and another.
 boolean equals(java.lang.Object a)
          Compares two tensors for equality.
 double getComponent(int i, int j, int k, int l)
          Returns a component of this tensor.
 void setComponent(int i, int j, int k, int l, double x)
          Sets the value of a component of this tensor.
 Rank4Tensor subtract(Rank4Tensor t)
          Returns the subtraction of this tensor by another.
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

rank4

protected double[][][][] rank4
DOCUMENT ME!

Constructor Detail

Rank4Tensor

public Rank4Tensor()
Constructs a 4th rank tensor.

Method Detail

equals

public boolean equals(java.lang.Object a)
Compares two tensors for equality.

Overrides:
equals in class java.lang.Object
Parameters:
a - a 4th rank tensor
Returns:
DOCUMENT ME!

getComponent

public double getComponent(int i,
                           int j,
                           int k,
                           int l)
Returns a component of this tensor.

Parameters:
i - 1st index
j - 2nd index
k - 3rd index
l - 4th index
Returns:
DOCUMENT ME!
Throws:
IllegalDimensionException - If attempting to access an invalid component.

setComponent

public void setComponent(int i,
                         int j,
                         int k,
                         int l,
                         double x)
Sets the value of a component of this tensor.

Parameters:
i - 1st index
j - 2nd index
k - 3rd index
l - 4th index
x - value
Throws:
IllegalDimensionException - If attempting to access an invalid component.

add

public Rank4Tensor add(Rank4Tensor t)
Returns the addition of this tensor and another.

Parameters:
t - a 4th rank tensor
Returns:
DOCUMENT ME!

subtract

public Rank4Tensor subtract(Rank4Tensor t)
Returns the subtraction of this tensor by another.

Parameters:
t - a 4th rank tensor
Returns:
DOCUMENT ME!