मुख्यपुटम् (Dashboard)सोपानम् ७ / १०८ (भूमिका १)
सोपानम् ७: सवर्ण-निर्णयः & सावर्ण्य-सिद्धिः
Sopāna 7: The Grand Phonetic Synthesis — `तुल्यास्यप्रयत्नं सवर्णम्` (1.1.9), `नाज्झलौ` (1.1.10), and Kātyāyana's Ṛ-Lṛ Vārtika
१. दर्शनम् — The Grand Mathematical Synthesis of Sound
"तुल्यास्यप्रयत्नं सवर्णम्।" (१.१.९)
[तुल्य-आस्य-प्रयत्नम् = तुल्यम् (Equal) + आस्यम् (Mouth Locus) + प्रयत्नम् (Internal Effort) | सवर्णम् (Savarna)]
tulya-āsya-prayatnaṃ savarṇam
"Sounds whose place of articulation inside the mouth (Āsya = Sthāna) AND whose internal effort (Prayatna = Ābhyantara) are identical are declared mutually Homogeneous (Savarṇa)."
In Sopānas 4, 5, and 6, we discovered the 3 physical dimensions of every sound:
- Sthāna (Sopāna 4): The exact anatomical origin point.
- Ābhyantara Prayatna (Sopāna 5): The intra-oral contact touch.
- Bāhya Prayatna (Sopāna 6): External breath and acoustic resonance.
Now in Sopāna 7, Pāṇini unites Sthāna and Ābhyantara to define SAVARṆA—the fundamental equivalence relation powering all Sanskrit Sandhi mergers (like अकः सवर्णे दीर्घः 6.1.101)!