Analysis on Conversion Inference of Categorical Proposition by Eulerian Graph
Cui Ze-yun, TV Open · Journal of Guangdong Institute of Public Administration · 2005
Matching up to the three indispensable conditions to conversion inference of categorical proposition in traditional logic is in fact proved to be the restriction of interrelation between lexical items that the conversion inference concerns, as is visually cleared by Eulerian graph. The topic concerning SOP conversion out of the three valid forms of conversion inference of categorical proposition has been regarded as the forbidden zone of traditional logic for long. However, through resorting to Eulerian graph, it will be found out that SOP can be transformed into POS at the time of endowing some conditions.