|  | 
 | .. _numeric: | 
 |  | 
 | ******************************** | 
 | Numeric and Mathematical Modules | 
 | ******************************** | 
 |  | 
 | The modules described in this chapter provide numeric and math-related functions | 
 | and data types. The :mod:`numbers` module defines an abstract hierarchy of | 
 | numeric types. The :mod:`math` and :mod:`cmath` modules contain various | 
 | mathematical functions for floating-point and complex numbers. The :mod:`decimal` | 
 | module supports exact representations of decimal numbers, using arbitrary precision | 
 | arithmetic. | 
 |  | 
 | The following modules are documented in this chapter: | 
 |  | 
 |  | 
 | .. toctree:: | 
 |  | 
 |    numbers.rst | 
 |    math.rst | 
 |    cmath.rst | 
 |    decimal.rst | 
 |    fractions.rst | 
 |    random.rst |