My prefix is young.
Is also a clipping.
And will likely never have a crush.
My suffix is well known and multiply defined in mathematics.
It is defined in Geometry, Arithmetic operations, Group Theory and Topology.
There is, to the best of my knowledge, at least one other important subfield of mathematics where it is defined.
My whole is a French word which some fancy English typographers refer to.
I previously only posted puzzles on logic, math, optimization, chess and so on on puzzling.SE, this is my first attempt on riddle as I'm French and still learning English :)
Hint 11 10 2020
You can see my whole in many of the world's addresses!
Hint 11 12 2020
My first is a young word because it coined in the internet in the 2010s.