commentary on Bhrahmagupta’s Brahmasphuta Siddhanta and
  Varahamihira’s Brihat Jataka.
                        SANGITA RATNAKARA
  Written by Sarangadeva (1210–47), it is one of the most important
  musicological texts from India. Both Hindustani and Carnatic schools
  regard it as a definitive text on Indian classical music. The text is also
  known as Saptadhyayi as it is divided into seven chapters. The first six
  chapters deal with the various aspects of music and musical instruments
  while the last chapter deals with dance. The significant commentaries on
  the text include the Sangitasudhakara of Simhabhupala (1330) and the
  Kalanidhi of Kallinatha (1430). This work was written in the mid-13th
  century. The author was attached to the court of Yadava King Singhana.
Krishna Krishna had many able ministers and generals to help him in
consolidating his power. During his reign, Vedantakalpataru, a commentary
on the Bhamati, which itself is a commentary upon Sankaracharya’s
Vedantasutrabhashya was composed.
Mahadeva He fought a successful war against Kakatiya Rudramba but
spared her life. He also made a futile attempt to bring the Hoyasala king,
Narasimha II, under the domination of the Yadavas. Hemadri, the great
Smriti writer, was an important officer under Mahadeva. He completed his
Vratakhanda during Mahadeva’s reign.
Ramachandra Ramachandra made a desperate attempt to efface the
memory of defeat inflicted on Mahadeva by the Hoyasalas. But the Yadavas
again suffered a decisive defeat. The last two decades of Ramachandra’s rule
proved to be disastrous to the Seuna country which led to the ultimate
extinction of the dynasty. In the beginning of 1296 Alauddin Khalji attacked
Devagiri and compelled Ramachandra to sue for peace. Though
Ramachandra retained his kingdom, he lost his independence. The situation
was fully exploited by their hereditary enemies in the east and south.
Ramachandra continued to send tribute to Alauddin till 1303–04 when the
latter’s forces were defeated