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4 天前 · Mali, officially the Republic of Mali, is a landlocked country in West Africa.Mali is the eighth-largest country in Africa, with an area of over 1,241,238 square kilometres (479,245 sq mi). The country is bordered to the north by Algeria, to the east by Niger, to the northwest by Mauritania, to the south by Burkina Faso and Ivory Coast, and to the west by Guinea and Senegal.
4 天前 · Charles Babbage KH FRS (/ˈbæbɪdʒ/; 26 December 1791 – 18 October 1871) was an English polymath.[1] A mathematician, philosopher, inventor and mechanical engineer, Babbage originated the concept of a digital programmable computer.[2] Babbage is considered by some to be "father of the computer".[2][3][4][5] He is credited with inventing ...
1 天前 · Fibonacci sequence. In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn . The sequence commonly starts from 0 and 1, although some authors start the sequence from 1 and 1 or sometimes ...
2 天前 · Pyotr Ilyich Tchaikovsky [n 1] ( / tʃaɪˈkɒfski / chy-KOF-skee; [2] 7 May 1840 – 6 November 1893) [n 2] was a Russian composer during the Romantic period. He was the first Russian composer whose music would make a lasting impression internationally.
2 天前 · Djibouti,[a] officially the Republic of Djibouti,[b] is a country in the Horn of Africa, bordered by Somalia[c] to the south, Ethiopia to the southwest, Eritrea in the north, and the Red Sea and the Gulf of Aden to the east. The country has an area of 23,200 km2 (8,958 sq mi).[1] In antiquity, the territory, together with Ethiopia, Eritrea and ...
1 天前 · Leo Tolstoy at age 20, c. 1848. Tolstoy was born at Yasnaya Polyana, a family estate 12 kilometres (7.5 mi) southwest of Tula, and 200 kilometres (120 mi) south of Moscow. He was the fourth of five children of Count Nikolai Ilyich Tolstoy (1794–1837), a veteran of the Patriotic War of 1812, and Princess Mariya Tolstaya (née Volkonskaya; 1790 ...
22 小時前 · Internet TLD. .ma. .المغرب. Morocco, [d] officially the Kingdom of Morocco, [e] is a country in the Maghreb region of North Africa. It overlooks the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to the east, and the disputed territory of Western Sahara to the south.
