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Eratosthenes of Cyrene (/ ɛr ə ˈ t ɒ s θ ə n iː z /; Ancient Greek: Ἐρατοσθένης [eratostʰénɛːs]; c. 276 BC – c. 195/194 BC) was an Ancient Greek polymath: a mathematician, geographer, poet, astronomer, and music theorist.
Eratosthenes of Athens (Ancient Greek: Ἐρατοσθένης) was one of the Thirty Tyrants elected to rule the city of Athens after the Peloponnesian War (431–404 BC). Having lost the war to the Spartans , the citizens of Athens elected thirty men as oligarchs .
Sieve of Eratosthenes: algorithm steps for primes below 121 (including optimization of starting from prime's square). In mathematics, the sieve of Eratosthenes is an ancient algorithm for finding all prime numbers up to any given limit.
However, Eratosthenes (c. 276 – c. 194/195 BC) was the first person to calculate the circumference of the Earth. Posidonius ( c. 135 – c. 51 BC ) also measured the diameters and distances of the Sun and the Moon as well as the Earth's diameter; his measurement of the diameter of the Sun was more accurate than Aristarchus', differing from ...
The Byte Sieve is a computer-based implementation of the Sieve of Eratosthenes published by Byte as a programming language performance benchmark.It first appeared in the September 1981 edition of the magazine and was revisited on occasion.
One assumes then that () can be written as = + ()where () is a density, meaning a multiplicative function such that =, <and is an approximation of () and () is some remainder term.
Eratosthenes crater is a relatively deep lunar impact crater that lies on the boundary between the Mare Imbrium and Sinus Aestuum mare regions. It forms the western terminus of the Montes Apenninus mountain range.
Eratosthenes was a Greek scholar of the third century BC. It may also refer to: Eratosthenes (crater), a lunar impact crater named after him; Eratosthenes (statesman), an ancient Athenian statesman of the fifth century BC; Eratosthenes Seamount; Eratosthenes of Croton, winner of the Stadion race at the 51st Olympiad in 576 BC