Source Code for Module geometry.manifolds.group

 1  from abc import ABCMeta, abstractmethod 
 2   
 3   
 4 -class Group(object): 
 5      __metaclass__ = ABCMeta 
 6       
 7      @abstractmethod 
 8 -    def multiply(self, g, h): 
 9          ''' Implements the group operation. ''' 
10          pass 
11       
12      @abstractmethod 
13 -    def inverse(self, g): 
14          ''' Implements the group inversion. ''' 
15          pass 
16   
17      @abstractmethod 
18 -    def unity(self): 
19          ''' Returns the group unity. ''' 
20          pass 
21           
22 -    def identity(self):  
23          return self.unity() 
24