I have to prepare a presentation of one paper where I need to have some simple diagrams showing how jump processes (part of financial mathematics) looks like. Here I add a picture what I need to draw.
I am sure, there is million ways how to draw what I need using TikZ or Forest package, but I cannot find it anywhere and I am running out of time, so I cannot now learn any of those packages from the scratch... please help.
Eventually, if also someone explained pre principle, how to draw "longer diagram" (e.g. each branch could split into two later in the same manner) I would be even more thankful :)