RTNI - Setup instructions for MATHEMATICA

Dependencies

The MATHEMATICA implementation of RTNI has been developed and tested using Wolfram Mathematica version 11.

Installation

The package is contained in the Wolfram Language Package file RTNI.wl. Precomputed Weingarten functions are provided in the subfolder precomputedWG. Proceed as follows:

• Place RTNI.wl in a directory.
• Place the subfolder precomputedWG in the same directory.
• Open/Create a new mathematica-file in the directory.
• Load the RTNI package using the following commands

SetDirectory[NotebookDirectory[]];
<< RTNI`

If the corresponding output is of the form

Package RTNI (Random Tensor Network Integrator) version 1.0.5 (last modification: 26/01/2019).

Loading precomputed Weingarten Functions from /precomputedWG/functions1.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions2.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions3.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions4.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions5.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions6.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions7.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions8.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions9.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions10.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions11.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions12.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions13.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions14.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions15.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions16.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions17.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions18.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions19.txt
Loading precomputed Weingarten Functions from /precomputedWG/functions20.txt

then the package and the precomputed functions have been correctly loaded.

Further steps

• Look at the List of files and sample code for MATHEMATICA