Laypersons who are not trained in the relevant formal notation may sometimes feel lost when trying to read academic papers on computer science.
This gist is intended to be a short introductory "cheat sheet" for some of the symbols we may encounter in such papers, to help make the work more accessible to a broader audience, particularly those working in the software industry looking to gain a deeper understanding into formal computer science.
In addition to this introductory glossary of symbols, it may also be helpful to reference this glossary of terms so that the formal usage of certain words can be known to the reader.
One can also read a great bit more detail on this topic in The Formal Semantics of Programming Languages, a text introducing a lot of details in formal notation.