Pre-oedipal triangles (starring: φ), properly oedipal squares (starring: -φ), a bit of set theory (don’t shoot the messenger, pls), and the first few graphs en route to that of desire — all begin to take shape in Part 4 of this series on “The Subversion of the Subject and the Dialectic of Desire in the Freudian Unconscious.” But also, with them, something else — something beyond demand, desire, and fantasy alike.