Zhi-Wei Sun and his twin brother Zhi-Hong Sun proved a theorem about what are now known as the Wall-Sun-Sun primes that guided the search for counterexamples to Fermat's last theorem.
Zhi-Wei Sun and his twin brother Zhi-Hong Sun proved a theorem about what are now known as the Wall-Sun-Sun primes that guided the search for counterexamples to Fermat's last theorem.
In 2003, he presented a unified approach to three famous topics of Paul Erdős in combinatorial number theory: covering systems, restricted sumsets, and zero-sum problems.
Sun Quan, however, was not satisfied with the territory he had acquired, and he was concerned that his nominal ally in the west might soon become as much of a threat as his enemy in the north.
Sun Quan based his claim upon two predications: that the imperial position, vacated by Han, had not been filled by any worthy successor and that his own accession was justified by the virtue of his government, in particular by his concern for the people.
The Wei dynasty of the Cao had fallen into alien hands because the emperors lacked the support of their own relatives, but the Sima had gained their position through appointments granted within the family, and the Jin dynasty would not be so defenceless.
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