In reference to an existent phenomenon "this," negation phenomena such as "nothing other than this" and "not that." (1) According to Gelug, they are nonstatic phenomena implicitly apprehended when a valid conceptual or nonconceptual cognition explicitly apprehends its involved object as "this." (2) According to non-Gelug, a static fact about "this" that is validly knowable only conceptually, separately from valid cognition of "this."
Tibetan: don rang-mtshan-gyi gzhan-sel
J Hopkins: other-eliminator that is a factual specifically characterized phenomenon.