It has been requested that I add the array_to_latex tool from the textbook package to qiskit. I will need some assistance with how / where is best to add this, as well as bringing to code up to qiskit's standard before I ma

The notebook says:

You can either call print() on the circuit, or call the draw() method on the object. This will render a ASCII art version of the circuit diagram. [snip] There are two alternative output renderers for the quantum circuit. One uses matplotlib, and the other uses LaTeX, which leverages the qcircuit package. These can be specified by using mpl and latex values for the out

Did you find a doc bug or broken link that needs to be fixed?

• What is the file name(s) where you found the bug?
  https://github.com/Qiskit/qiskit/blob/master/docs/install.rst

• What is the current text that needs to be fixed or removed? (You can copy and paste)
  The current text uses source activate name_of_my_env for linux and mac and activate name_of_my_env for windows to activate

We've had Majorana operators in OpenFermion for awhile now. It would be great to have transformation functions from a FermionOperator to MajoranaOperator.

I would imagine there could be a simple substitution function that maps FermionOperators to their Majorana representation. Maybe a more efficient implementation for tensor representation of FermionOperators would be doing the basis rotati

I'd love to contribute to having the docs translated to Spanish. Anybody else who'd like to contribute is welcome to join, of course.

Issue description

The function sf.apps.similarity.orbit_cardinality does not work, when the second argument (i.e. 'modes') is larger than 170. The issue happens because of the function scipy.special.factorial, which, in the way it is used, calculates factorials only up to (i

Now, there's no unit test.

Add a requirements-test.txt file, so that users that want to run the test suite can easily install all required dependencies.

In addition, the documentation regarding how to run the tests should be made clearer.