Street food of Mumbai all of which are vegetarian. In terms of non-vegetarian offerings omelette-pav, kebabs and fish are found on Mumbai streets. The amount of variety of street food is attributed to the cosmopolitan culture of the city. In the 1980s Indianised Chinese food was an emerging trend on Mumbai streets. Other popular street food items include Misal Pav (spicy curry made of sprouted moth beans which is eaten with pav, an Indian bread), and vegetable frankie (a popular and cheaper version of wraps and rolls). Kulfi (a type of ice cream) and gola (type of ice cone) are among the desserts and
Proof that π is irrational Proof that π is irrational In the 1760's, Johann Heinrich Lambert proved that the number (pi) is irrational: that is, it cannot be expressed as a fraction "a"/"b", where "a" is an integer and "b" is a non-zero integer. In the 19th century, Charles Hermite found a proof that requires no prerequisite knowledge beyond basic calculus. Three simplifications of Hermite's proof are due to Mary Cartwright, Ivan Niven, and Nicolas Bourbaki. Another proof, which is a simplification of Lambert's proof, is due to Miklós Laczkovich. In 1882, Ferdinand von Lindemann proved that is not just irrational, but transcendental as well.