Teorema translates to "theorem" in English. It's an intriguing word to find in a song title and lyrics, as it's typically associated with mathematics and logic, not emotional or romantic themes.
In this song, Legião Urbana uses "Teorema" metaphorically to describe a complex, perhaps unprovable, truth about a relationship or life itself. The lyrics state, "Parece um teorema sem ter demonstração" (It seems like a theorem without a demonstration), highlighting a profound idea that feels true but lacks a clear explanation, making it a unique and thought-provoking choice.
"Teorema" opens on a plea: "Não vá embora" [Don't go away], "Fique um pouco mais" [Stay a bit longer]. What follows isn't a love declaration so much as an admission that the singer can't explain what's happening between them — "Ninguém sabe fazer" [Nobody knows how to do], "O que você me faz" [what you do to me]. He calls the feeling "energia mas é só distorção" [energy, but it's just distortion] — static with no clear signal, and he isn't sure if it's the problem or the solution.
The title lands in the second chorus: "Parece um teorema sem ter demonstração" [It seems like a theorem without proof]. A theorem is supposed to be provable; this one isn't, so he tells the other person to stop trying to make sense of it — "Não tenha medo" [Don't be afraid], "Não preste atenção" [Don't pay attention], "Não dê conselhos" [Don't give advice], "Não peça permissão" [Don't ask for permission]. The song refuses to resolve on purpose: "E parece que sempre termina" [And it seems like it always ends], "Mas não tem fim" [But it has no end] — the same open, unproven shape as the theorem itself.