| #include "TLorentzBoost.h" |

| Double_t | TLorentzTransform::Determ() const |
| Double_t | TLorentzTransform::fMatrix[4][4] | storage for rotation matrix; |
| static Double_t | TLorentzTransform::fResolution | matrix resolving "distance" |
Lorentz Algebra Package The present package implements all the basic algorithms dealing with three-vectors and four-vectors, together with their transform- ations. Four-vectors are derived from three-vectors and inherit all of their members. Direct access to the components is provided through the subscript operator [i] which covers the range 1...3 for three-vectors and 0...3 for four-vectors. Transformations are implemented as a friend class so that they can operate directly on the data members of the vector, which are otherwise hidden. The special transformations (rotations and boosts) inherit from the general class LorentzTransform. Products of rotations are other rotations, whereas the product of a boost with anything is simply a LorentzTransform. The LorentzTransform objects can be tested for the property of being a pure rotation or boost. They can also implement non-isochronous and improper transformations. Rotations may be specified either by Euler angles or by a rotation axis. All angles are assumed to be in radians. Vector classes are defined for both Real_t and Complex_t generic types. For complex vectors there are several additional member functions to deal with operations that are specific to complex numbers. The classes comprising this package are: TThreeVectorReal is a base class TThreeVectorComplex is a base class TFourVectorReal is a TThreeVectorReal TFourVectorComplex is a TThreeVectorComplex TLorentzTransform is a base class TThreeRotation is a TLorentzTransform TLorentzBoost is a TLorentzTransform The following aliases are defined for these classes: TUnitVector is an alias for TThreeVectorReal TThreeVector is an alias for TThreeVectorReal TFourVector is an alias for TFourVectorReal This package was developed at the University of Connecticut by Richard T. Jones