I apologize for the trivial nature of this question but my early attempts to seek an answer via the Community search engine just takes me to topics about creating Mathematica User Groups.
I am starting to teach myself the elements of Group Theory and I wish to define a very simple group that comprises four elements under the operation of traditional multiplication. Those elements are 1, -1, i, -i.
The in-built Mathematica help has left me baffled so far as it talks of Cycles, Permutation Groups etc. which mean nothing to me at the moment.
Any help for a real beginner will be gratefully received.
Thank you, David
