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## Introduction
Apart from these, there are mentions of some other texts like 'Shabdavatarannyasa' and 'Jainendrannyasa', but they have not been found yet.
Akalanka Bhatta was the son of a king named 'Laghuhamb' and 'Bhatta' was his title. He was a brilliant Acharya of the 8th century Vikram era. Akalankadev was the organizer of Jain logic and an extraordinary scholar of philosophy. Studying his philosophical works reveals his profound scholarship at every step. In them, he has refuted opposing views with irrefutable arguments while establishing his own. The style of the texts is extremely profound, concise, rich in meaning, and aphoristic. This is why later Acharyas like Haribhadra have respectfully mentioned Akalanka's logic. Not only this, scholars like Jinasdasagani Mahत्तर have also been inspired to study his 'Siddhvinischya' text. This clearly shows the importance of Akalankadev. Currently, his following works are available: Laghuyastray, Nyayavinischaya, Siddhvinischya, Ashtshati (Devagam Tika), Pramanasangrah - with Sopanjna Bhashya, Tattvarthrajavartika, Swarupasambodhan, and Akalankastotra.
Akalankadev's time is considered to be the 7th-8th century Vikram era because he had a great debate with Buddhists in Vikram Samvat 700, as is clear from the following verse:
"Vikramarkashagdiyashatasaptpramajushi | Kale'kalankayatinoboudhdharvado mahanabhoot ||"
In the commentary of the Nandisutra, the famous Shwetambar scholar Shri Jinasdasagani Mahत्तर has mentioned the text named 'Siddhvinischya' with great respect, whose time of composition is Shaka Samvat 568, i.e., Vi. Sa. 733, as is evident from his following statement: "Shakarajah panchasavarshashateshvyaatikranteshvashta navatishu nandyanayanachanih samaapta." Muni Jinavijayaji has correctly stated this time of the commentary based on many palm leaf manuscripts. Therefore, Akalankadev's time is definitely the 7th century Vikram era.
Shripal - He was a disciple of Virsvami and a contemporary scholar or Dharma Guru brother of Jinsen. Jinsenacharya has mentioned that Jayadhwala was edited by him. This makes him seem like a very great scholar. Although there is not much information about him due to lack of material, he is definitely a scholar of the 8th century Vikram era.
Patrakesari - He was born in a Brahmin family. He was a very intelligent and learned scholar. Hearing Acharya Samantabhadra's Devagamstotra, he developed faith in Jainism. Patrakesari was an expert in logic and the author of the logical text 'Trilakshanak Darshan'. Although this text is currently unavailable, the commentator of Tattvasangrah, Buddhist Acharya Kamalshil, has mentioned this text of Patrakesari. Many of its verses are found in 'Tattvasangrahapunjika'. The subject of this text is to refute the three-fold characteristic of the Buddhist argument in detail. His other work is 'Jinendragunastuti', which is famous as 'Patrakesari Stotra'. This stotra is also full of philosophical discussions. In it, through praise, he has introduced the true nature of things through his logical and research-based arguments. The total number of verses in the stotra is 50. In it, the extraordinary