Difference

In the Lacanian framework, "difference" as theorized across these two occurrences is not a qualitative, perceptible variation between things — not the difference between red and blue, tall and short — but a purely formal, structural operation that the signifier introduces into the Real. Lacan's argument in Seminar IX is that the signifier's founding function is precisely to connote "difference in the pure state": the unary trait (einziger Zug) does not represent a positive quality but marks a cut, an inscription, a notch that establishes distinctness without reference to any resemblance or gradation. The examples — Paleolithic tally marks, de Sade's enumeration, Chinese calligraphy — are chosen because each reduces the mark to its minimal, repeatable function: not to represent something qualitatively, but to install the very possibility of counting, of series, of the "one more." Signifying difference is therefore prior to and constitutive of meaning rather than being derived from it; it is the zero-degree condition of the signifying chain.

The second occurrence, from Zupančič's reading of Deleuze, places difference in a broader ontological register. Here, difference is elevated to the level of Being itself ("Being, the only and univocal Being, is Difference"), with repetition as the sole mode of access to this Being-Difference. Zupančič treats this Deleuzian position as a foil: by installing difference as an absolute and asubjective ontological principle, Deleuze inadvertently transforms it into a new law — a totalizing ground that undermines the very excess and singularity it purports to protect. This sets up the Lacanian counter-position, which preserves difference not as a metaphysical substance but as the negative, subject-dividing cut produced by the letter and the unary trait operating in the Real.

In jacques-lacan-seminar-9, the concept of difference belongs to Lacan's account of the unary trait and the birth of the signifier, placing it at the intersection of the Signifier, the Letter, and the Real. Signifying difference is what the unary trait introduces: a mark in the Real that is not yet meaning, not yet the full signifying chain, but the inaugural cut that makes a chain possible. This connects directly to the Letter (the material support of inscription) and to the Real (into which the unary trait carves its notch). It is an extension and radicalization of Saussurean differential linguistics: Lacan strips difference of any positive, qualitative content and leaves only the structural remainder — the cut itself. The Unary Trait is thus the minimal vehicle of signifying difference, and Identification (specifically symbolic identification) is what the subject performs by latching onto such a trait.

In the-odd-one-in-on-comedy-alenka-zupancic, difference migrates into a debate about ontology and repetition, cross-referencing the Eternal Return. Zupančič uses the Deleuzian formulation to set up a contrast with the Lacanian Subject and with the way Lacanian repetition (Wiederholung) functions not as a celebration of difference-as-being but as the subject's compulsive circling around a missed encounter — the Real as tuché. Where Deleuze makes difference a self-sufficient ontological ground, Lacan keeps difference tied to the subject's constitutive lack and to the impossibility of ever fully accessing the Real. The concept of difference thus lives at the border of ontology and structure, serving as the conceptual hinge between the two sources and the broader cross-referenced cluster of Subject, Real, Signifier, and Eternal Return.

Seminar IX · IdentificationJacques Lacan · 1961 (p.34)

the signifying difference is distinct from anything that refers to qualitative difference... the signifier as such serves to connote difference in the pure state

The phrase "difference in the pure state" is theoretically loaded because it strips difference of all positive, phenomenal content — no quality, no resemblance, no gradation — leaving only the bare structural operation of distinction that founds the signifying chain; "connote" further signals that this is not denotative (pointing to a thing) but operative (installing a differential relation), aligning the signifier's function with the formal, material cut of the unary trait rather than with semantic reference.