)
I think I wrote here the weird sentence, so here comes some semantics from me then.
By "Delta Vee = Half-life" I mean that I want to say these both are formulas from physics/chemistry and that they are connected with main plot of the story.
As character Delta Vee connected with rocket science, so here's her name is Delta Vee that actually mean term Delta-V ( ∆v ) from the.... rocket science.
And half-life as a game that connected with the main story and with game's setting and it's also real term from nuclear physics "Half-Life" ( t1⁄2λ ).
By few words: I mean that name of character/game are directly connected with main setting of the stories. Not that they are equivalents by science terms.