regina-normal-doc 4.96-1 (arm64 binary) in ubuntu vivid

 Regina is a suite of mathematical software for 3-manifold topologists.
 This package provides a rich users' handbook, complete API documentation
 for the C++ calculation engine and Python bindings, and the full
 specification for Regina's XML data file format.
 .
 Regina focuses on the study of 3-manifold triangulations and normal
 surfaces. Other highlights include angle structures, census enumeration,
 combinatorial recognition of triangulations, and high-level tasks such as
 3-sphere recognition and connected sum decomposition.
 .
 For Regina's standard graphical user interface, install the package
 regina-normal.