Catuskoti
Catuṣkoṭi (Sanskrit; Devanagari: चतुष्कोटि, Tibetan: མུ་བཞི, Wylie: mu bzhi) is a logical argument(s) of a 'suite of four discrete functions' or 'an indivisible quaternity' that has multiple applications and has been important in the Dharmic traditions of Indian logic and the Buddhadharma logico-epistemological traditions, particularly those of the Madhyamaka school.
Robinson (1957: pp. 302–303) states (negativism is employed in amplification of the Greek tradition of Philosophical skepticism):
A typical piece of Buddhist dialectical apparatus is the ...(catuskoti). It consists of four members in a relation of exclusive disjunction ("one of, but not more than one of, 'a,' 'b,' 'c,' 'd,' is true"). Buddhist dialecticians, from Gautama onward, have negated each of the alternatives, and thus have negated the entire proposition. As these alternatives were supposedly exhaustive, their exhaustive negation has been termed "pure negation" and has been taken as evidence for the claim that Madhyamika is negativism.
Read more about Catuskoti: Catuṣkoṭi Algorithm Mapped in Partial Logical Algebra, Nagarjuna's Diamond Slivers, Exegesis, Nomenclature, Orthography and Etymology, Antecedents and Pervasion, Nargarjuna, Catuṣkoṭi Post-Nargarjuna, Catuṣkoṭi Paradox: A Simple Complex, Four Extremes