Help I need suggestions for engraving infinity on wedding glasses. Please read details.

My daughter is getting married and her and her future husband both are very much into math and computer stuff.
So I was thinking of something that means infinity that would be understood by IT people. I think it would have more meaning to them since it is a love they both share.
I don’t want the common figure 8 symbol of eternity.
I would appreciate your help on this or if you have some other ideas that is the equivalent in the geek world.

Do not misunderstand, I actually admire geeks, I am even a bit of one but I don’t understand all the little hidden aspects of it. I don’t even find the word offensive. I think of it as a compliment.