Saṅkhyāpaddhatiḥ

Saṅkhyāpaddhatiḥ (सङ्ख्यापद्धतिः), a collection of ancient Indian alpha-syllabic numeral systems.

1. Kaṭapayādi Saṅkhyā, a Kaṭapayādi encoding-decoding system.
2. Āryabhaṭīya Saṅkhyā, an Āryabhaṭīya encoding-decoding system.
3. Bhūtasaṅkhyā a Bhūtasaṅkhyā encoding-decoding system.