Who is author of tattvarth sutra?

The Tattvartha Sutra, also known as the Tattvarthadhigama Sutra, is a seminal work in Jain philosophy that systematically presents the core doctrines of Jainism. It was composed by Acharya Umaswati, who is regarded as one of the earliest Jain philosophers to write in Sanskrit. His work serves as a comprehensive guide to Jain metaphysics, ethics, and spiritual practice.