M. Hiriyanna was an Indian philosopher who lived during the 19th century. He studied and taught philosophy at Mysore College in India. He was known for his ideas about Advaita Vedanta, a traditional form of Hindu philosophy. This type of philosophy focuses on the idea that “all is one” and that ultimate reality is the same as the individual self. Hiriyanna's main contribution to Advaita Vedanta was his description of Pramana, or the ways of knowing. He believed that there were three ways of knowing: perception, inference, and verbal testimony. He thought that these three ways of knowing could be used to understand the world. He also wrote about traditional Indian topics such as the Upanishads and the Vedas. His work helped to bring traditional Indian philosophy to the world.