Package aloha :: Module aloha_object :: Class Metric

Class Metric

         object --+        
                  |        
 aloha_lib.Variable --+    
                      |    
aloha_lib.LorentzObject --+
                          |
                         Metric

Nested Classes

[hide private]

Inherited from aloha_lib.LorentzObject: add_class, mult_class

Inherited from aloha_lib.Variable: VariableError

Instance Methods

[hide private]

__init__(self, lorentz1, lorentz2, prefactor=1)
initialization of the object with default value

source code

create_representation(self)

source code

expand(self)
Expand the content information.

source code

simplify(self)
Return the Denominator in a abstract way

source code

Inherited from aloha_lib.LorentzObject: __eq__, __pow__, copy, has_component

Inherited from aloha_lib.Variable: __add__, __div__, __iadd__, __mul__, __radd__, __rdiv__, __repr__, __rmul__, __rsub__, __rtruediv__, __str__, __sub__, __truediv__, factorize

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Class Variables

[hide private]

metric = {(0, 0): 1, (0, 1): 0, (0, 2): 0, (0, 3): 0, (1, 0): ...

Inherited from aloha_lib.Variable: contract_first, vartype

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, lorentz1, lorentz2, prefactor=1)
(Constructor)

source code

initialization of the object with default value

Overrides: object.__init__: (inherited documentation)

create_representation(self)

source code

Overrides: aloha_lib.LorentzObject.create_representation

expand(self)

source code

Expand the content information. We overload the basic rules in order to avoid the computation of Metric(1,2) * Metric(1,2) = 4

Overrides: aloha_lib.Variable.expand

simplify(self)

source code

Return the Denominator in a abstract way

Overrides: aloha_lib.Variable.simplify

Class Variable Details

[hide private]

metric

Value:

{(0, 0): 1,
 (0, 1): 0,
 (0, 2): 0,
 (0, 3): 0,
 (1, 0): 0,
 (1, 1): -1,
 (1, 2): 0,
 (1, 3): 0,
...

Class Metric

__init__(self, lorentz1, lorentz2, prefactor=1) (Constructor)

create_representation(self)

expand(self)

simplify(self)

metric

init(self, lorentz1, lorentz2, prefactor=1)
(Constructor)