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5 天前 · Fibonacci sequence. A tiling with squares whose side lengths are successive Fibonacci numbers: 1, 1, 2, 3, 5, 8, 13 and 21. 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 .
5 天前 · Linearity[edit] The Schrödinger equation is a linear differential equation, meaning that if two state vectors and are solutions, then so is any linear combination. of the two state vectors where a and b are any complex numbers. [13] : 25 Moreover, the sum can be extended for any number of state vectors.
5 天前 · Christmas is an annual festival commemorating the birth of Jesus Christ, observed primarily on December 25 as a religious and cultural celebration among billions of people around the world. A feast central to the liturgical year in Christianity, it follows the season of Advent (which begins four Sundays before) or the Nativity Fast, and initiates the season of Christmastide, which historically ...
3 天前 · Warren Gamaliel Harding (November 2, 1865 – August 2, 1923) was an American politician who served as the 29th president of the United States from 1921 until his death in 1923. A member of the Republican Party, he was one of the most popular sitting U.S. presidents. After his death, a number of scandals were exposed, including Teapot Dome, as ...
2024年4月17日 · Manifest destiny was a phrase in the 19th-century United States that represented the belief that American settlers were destined to expand westward across North America, and that this belief was both obvious ("manifest") and certain ("destiny"). The belief was rooted in American exceptionalism and Romantic nationalism, implying the inevitable ...
