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A unique and native form of poetic literature in Kannada called Vachanas developed during this time. They were written by mystics, who expressed their devotion to God in simple poems that could appeal to the masses. Basavanna, Akka Mahadevi, Allama Prabhu, Channabasavanna and Siddharama are the best known among them.In Sanskrit, a well-known poem (Mahakavya) in 18 cantos called Vikramankadeva Charita by Kashmiri poet Bilhana recounts in epic style the life and achievements of his patron king Vikramaditya VI. The work narrates the episode of Vikramaditya VI's accession to the Chalukya throne after overthrowing his elder brother Someshvara II. The great Indian mathematician Bhāskara II (born c.1114) flourished during this time. From his own account in his famous work Siddhanta Siromani (c. 1150, comprising the Lilavati, Bijaganita on algebra, Goladhaya on the celestial globe and Grahaganita on planets) Bijjada Bida (modern Bijapur) was his native place.Manasollasa or Abhilashitartha Chintamani by king Someshvara III (1129) was a Sanskrit work intended for all sections of society. This is an example of an early encyclopedia in Sanskrit covering many subjects including medicine, magic, veterinary science, valuing of precious stones and pearls, fortifications, painting, music, games, amusements etc. While the book does not give any of dealt topics particular hierarchy of importance, it serves as a landmark in understanding the state of knowledge in those subjects at that time. Someshwara III also authored a biography of his famous father Vikramaditya VI called Vikraman-Kabhyudaya. The text is a historical prose narrative which also includes a graphic description of the geography and people of Karnataka.A Sanskrit scholar Vijnaneshwara became famous in the field of legal literature for his Mitakshara, in the court of Vikramaditya VI. Perhaps the most acknowledged work in that field, Mitakshara is a treatise on law (commentary on Yajnavalkya) based on earlier writings and has found acceptance in most parts of modern...

answer the following question:

What is the full name of the person whose elder brother was Someshvara II? 

Vikramaditya VI