The short form of my real name is Lena, the only one I use, and
L∃N∀ is my signature art seal. ∃∀- are math signs, which mean "exists"
∃ and "for all"
There was no Unicode character with a line above - logical "not" - for "for all" and the meaning changed from "exist not for all" to almost the opposite, which I find amusing - hope you do too!
My last name, Nechet, means "odd number" in Ukrainian, like -1, 1, 3, 5, 7, ... - integers that cannot be divided by 2 exactly. It is my birth name.