The lack of literature and studies concerning the role and functionality of the ellipsis, not only as a rhetorical figure but also as a narrative tool of analysis, is a fact that deserves to be addressed, questioned and repaired. Yet the question arises how to do this. In the following thesis, the resource of the narratological method is applied, which allows us to immerse ourselves in the elliptical depths of Borges's fictionality. The different types of ellipses (explicit, implicit, and hypothetical) present in the text were surgically extracted, and anachronies and focalizations were also indicated. Next, we moved on to the analysis and interpretation of the material. The results obtained after the analysis were revealing and their contributions were an emulating incentive for future research. Especially in this new and paradigmatic era of hypertexts and mutants, of ghostly identities and digital avatars, the in-depth study of the ellipsis, due to its philosophical scope and, why not, indispensable for the emergence of new theories in accordance with current reality.