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dcernst / IBL-AbstractAlgebra

IBL course materials for an undergraduate first-semester abstract algebra course that emphasizes visualization.
http://dcernst.github.io/IBL-AbstractAlgebra/
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Add some simple problems involving binary operations #117

Closed dcernst closed 4 years ago

dcernst commented 5 years ago

Here is a potential problem to add.

\begin{problem} Determine whether each of the following is a binary operation on the specified set. \begin{enumerate} \item Ordinary subtraction on the set of natural numbers. \item Ordinary subtraction on the set of integers. \item Ordinary division on the set of integers. \item Ordinary division on the set of rational numbers. \item Ordinary division on the set of non-zero rational numbers. \end{enumerate} \end{problem}

dcernst commented 4 years ago

I have some examples. I think the is sufficient.