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The ProblemHow densely can identical spheres be packed in n-dimensional space? In one dimension, the problem is trivial, and in two dimensions, elementary proofs have existed for decades. In three dimensions, a solution was conjectured by Kepler in 1611, but it was not proved until Thomas Hales settled it in 1998, in a heavily computer-assisted proof that subsequently took over a decade to formally verify.
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Behavioral research demonstrates that Millennials and Gen Z place greater value on flexibility, adaptability, and experiences than on brand loyalty or long-term commitment. Decisions are made earlier, adjusted more frequently, and changed with much less hesitation than in previous generations. Loyalty to a specific airline or itinerary is therefore weaker, not only due to price considerations but because variety and adaptability outweigh stability.
Американские сенаторы захотели принудить Трампа прекратить удары по Ирану14:51
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Раскрыта новая задумка Трампа против Ирана14:57