結果因としてのprayatnānantarīyakatva――プラジュニャーカラグプタの議論――

抄録

In Pramāṇavārttika 4.195–204 and Pramāṇaviniścaya 3.34–39, Dharmakīrti attempts to establish a convergence between his own theory of logical reason, which consists of kāryahetu and svabhāvahetu, and Dignāga’s theory of ninefold logical reason. Kṛtakatva and prayatnānantarīyakatva are recognized as correct logical reasons by Dignāga; Dharmakīrti regards the latter as an example of both kāryahetu and svabhāvahetu. When discussing prayatnānantarīyakatva as kāryahetu, Dharmakīrti refutes the permanence and manifestation of sound by Mīmāṃsakas and others. Although this understanding of Dharmakīrti’s arguments has been elucidated by previous research, no examination focuses specifically on commentaries. In particular, Pramāṇavārttikālaṅkāra by Prajñākaragupta and Pramāṇaviniścayaṭīkā by Dharmottara contain detailed discussions regarding the criticism of the Mīmāṃsaka’s theory. Clarifying these commentaries is crucial for shedding light on the exchange between different schools through the analysis of logical reason, which is a significant component of inference. This paper aims to provide an introductory study of Prajñākaragupta’s analysis of Pramāṇavārttika 4.195–198, while also comparing it with other commentaries.