偏离
发表于 2025-3-25 04:51:28
Primesds counter-intuitive and, in fact, it isn’t true, as Euclid demonstrated a long time ago. Actually, he did it without demonstrating any primes — he just showed that assuming a finite number of primes leads to a neat contradiction.
ear-canal
发表于 2025-3-25 10:46:14
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胖人手艺好
发表于 2025-3-25 12:29:42
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generic
发表于 2025-3-25 16:41:25
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adj忧郁的
发表于 2025-3-25 20:36:53
Quadratic Congruencesnication tasks as certified receipts, remote signing of contracts, and coin tossing — or playing poker over the telephone (discussed in Chap. 19). Finally, quadratic congruences are needed in the definition of pseudoprimes, which were once almost as important as actual primes in digital encryption (see Chap. 19).
闪光你我
发表于 2025-3-26 02:20:10
IntroductionHermann Minkowski, being more modest than Kronecker, once said “The primary source (Urquell) of all of mathematics are the integers.” Today, integer arithmetic is important in a wide spectrum of human activities and natural phenomena amenable to mathematic analysis.
财政
发表于 2025-3-26 08:08:38
The Natural NumbersHere we encounter such basic concepts as ., ., and ., and we learn the very fundamental fact that the composites can be represented in a . way as a product of primes.
轿车
发表于 2025-3-26 12:06:43
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Dignant
发表于 2025-3-26 13:40:22
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Congregate
发表于 2025-3-26 20:33:07
Knapsack EncryptionAs a diversion we return in this chapter to another (once) promising public-key encryption scheme using a trap-door function: . It, too, is based on residue arithmetic, but uses multiplication rather than exponentiation, making it easier to instrument and theoretically more transparent.