SiddhÃÂnta à Âiromaá¹Âi (Sanskrit: à ¤¸à ¤¿à ¤¦à ¥Âà ¤§à ¤¾à ¤¨à ¥Âà ¤¤ à ¤¶à ¤¿à ¤°à ¥Âà ¤®à ¤£à ¤¿, "Crown of treatises") is the major treatise of Indian mathematician BhÃÂskara II. He wrote the SiddhÃÂnta à Âiromaá¹Âi in 1150 when he was 36 years old. The work is composed in Sanskrit Language in 1450 verses.
The name of the book comes from his daughter, LëlÃÂvatë. It is the first volume of the SiddhÃÂnta à Âiromaá¹Âi. The book contains thirteen chapters, 278 verses, mainly arithmetic and measurement.
It is the second volume of SiddhÃÂnta à Âiromaá¹Âi. It is divided into six parts, contains 213 verses and is devoted to algebra.
Gaá¹ÂitÃÂdhyÃÂya and GolÃÂdhyÃÂya of SiddhÃÂnta à Âiromaá¹Âi are devoted to astronomy. All put together there are about 900 verses. (Gaá¹ÂitÃÂdhyÃÂya has 451 and GolÃÂdhyÃÂya has 501 verses).
In 1797, Safdar Ali Khan of Hyderabad translated the Siddhanta Shiromani into Persian as Zij-i Sarumani. The translation is now a lost work, and is known only from a mention in Khan's other work - Zij-i Safdari.