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List of unsolved problems may refer to several notable conjectures or open problems in various academic fields: Natural sciences, engineering and medicine
The problem to determine all positive integers such that the concatenation of and in base uses at most distinct characters for and fixed [citation needed] and many other problems in the coding theory are also the unsolved problems in mathematics.
Near Brussels, Charleroi Airport employees manually checked passengers in, but other software alleviated problems by 10:00 (UTC+2) and there were minimal delays. [88] ENAIRE's Aena, the Spanish national airport traffic control manager, mentioned an IT outage in their website and social media. [89] All Spanish airports reported disruptions. [90]
In many cases, frequent computer users develop computer vision syndrome, which is a degenerative eye problem which can result in severely reduced eyesight , blurred vision, overall eye tiredness and even glaucoma. Computer Eye Syndrome is an umbrella term for many problems but the causes of these problems can be easily identified.
This list of global issues presents problems or phenomena affecting people around the world, including but not limited to widespread social issues, economic issues, and environmental issues. Organizations that maintain or have published an official list of global issues include the United Nations, and the World Economic Forum.
Today’s mathematicians would probably agree that the Riemann Hypothesis is the most significant open problem in all of math. It’s one of the seven Millennium Prize Problems , with $1 million ...
For the first two decades of the 20th century, mass unemployment was not the major problem it had been in the first half of the 19th. While the Marxist school and a few other thinkers continued to challenge the optimistic view, technological unemployment was not a significant concern for mainstream economic thinking until the mid to late 1920s.
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