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Tin Stars is an anthology of science fiction short stories edited by Isaac Asimov, Martin H. Greenberg and Charles G. Waugh as the fifth volume in their Isaac Asimov's Wonderful Worlds of Science Fiction series. It was first published in paperback by Signet/New American Library in July 1986. [1]
"Mute Milton" "The Greatest Car in the World" "The Final Battle" "The Powers of Observation" "The Ghoul Squad" "Toy Shop" "You Men of Violence" "The Finest Hunter in the World"
A prime number (or prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. By Euclid's theorem, there are an infinite number of prime numbers. Subsets of the prime numbers may be generated with various formulas for primes.
Cast in the shape of a peck, or dou in Chinese, each ingot weighs just over 1 pound (0.45 kg). Ten blocks made up one unit called a small bundle, and 40 blocks made up one large bundle. Details of tin production in early Malacca were recorded in the 1436 book Description of the Starry Raft by Fei Xin, a translator of Admiral Zheng He.
A star prime is a star number that is prime. The first few star primes (sequence A083577 in the OEIS) are 13, 37, 73, 181, 337, 433, 541, 661, 937. A superstar prime is a star prime whose prime index is also a star number. The first two such numbers are 661 and 1750255921. A reverse superstar prime is a star number whose index is a star prime ...
Number the stars is partly focused in the friendship of two 10-year old girls but it's really about the struggle of the Danes in rescuing the jews from being 'relocated'(killed) by the Nazis. it's also good for adults.
However, it does not contain all the prime numbers, since the terms gcd(n + 1, a n) are always odd and so never equal to 2. 587 is the smallest prime (other than 2) not appearing in the first 10,000 outcomes that are different from 1. Nevertheless, in the same paper it was conjectured to contain all odd primes, even though it is rather inefficient.
Tin is a relatively rare element in the Earth's crust, with about two parts per million (ppm), compared to iron with 50,000 ppm, copper with 70 ppm, lead with 16 ppm, arsenic with 5 ppm, silver with 0.1 ppm, and gold with 0.005 ppm. [1] Ancient sources of tin were therefore rare, and the metal usually had to be traded over very long distances ...