how do I contact Scythian who answered my question?

Answer 1

In YA, in 'Search for questions' blank, type Scythian and click on 'search' or in 'Advanced'.
I did it just now and found 8 references to YA items where the name Scyhtian occurs. The second one (as of now) relates to the question of vinny, i.e. you. If this is the one (on math) that you are looking for, then click on that quesition and this would lead you to further details.