Source: – Subhash Kak / Twitter.
Genius mathematician Nārāyaṇa (1356) with two magic diagrams: Vajra Padma (Diamond Lotus) and Vrtta Padma (Inscribed Lotus). Sum of 12 = 294 pic.twitter.com/tjgV1pyZzr
— Subhash Kak ☀️ (@subhash_kak) October 18, 2017
These magic yantras fold over and the property holds across boundaries. In other words, they are three-dimensional!
— Subhash Kak ☀️ (@subhash_kak) October 20, 2017
The purpose of these magic diagrams is not fully known although they were used in amulets.
— Subhash Kak ☀️ (@subhash_kak) October 18, 2017