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donaggie03 writes "Well, my fellow mathematicians, it's that time again. Agostino Prástaro, from the Univeristy of Rome, claims to have proven Goldbach's Conjecture. The 14 page paper, THE GOLDBACH’S CONJECTURE PROVED (link to pdf) is pre-published on Arxiv. Prástaro claims to have proven the conjecture through commutative algebra and algebraic topology: Abstract. We give a direct proof of the Goldbach’s conjecture in number theory, formulated in the Euler’s form. The proof is also constructive, since it gives a criterion to find two prime numbers 1, such that their sum gives a fixed even number 2. (A prime number is an integer that can be divided only for itself other than for 1. In this paper we consider 1 as a prime num-ber.) The proof is obtained by recasting the problem in the framework of the Commutative Algebra and Algebraic Topology. So is this a valid proof? Are there any glaring errors or has this conjecture finally been proven?" Link to Original Source top
donaggie03 writes "The Air Force's X-51A Waverider crashed into the Pacific Ocean after being dropped from the wing of a B-52 bomber. 16 seconds into the test flight, a faulty control fin caused the Waverider lost control.
The Air Force had hoped the craft would be able to reach speeds of up to 4,600 mph. The service said it will release details of the failed test in a few weeks, after researchers are able to analyze the data from the flight." Link to Original Source