Lu should phase (left) discuss the problem with this reporter intake of the first secondary school teacher in Xi'an<br>Use no scale ruler,x9A8TPmI2P, compass trisection of any angle,air max 90 pas cher, is one of the three ancient Greek geometry problems. For thousands of years by mathematicians proved unable to achieve. December 1, 51-year-old construction worker, Xi'an citizens should phase Lu told reporters that he cracked the problem, but can not find people to help their validation.<br> <br>■ world-class problem for three months,lVA4uB1E7P, "crack"?<br> <br>Lu, 51,yTOagJ21iH, a company should phase Xi'an construction worker, who lives in East Commissioner Street Wolong Lane, junior middle school education. His spare time likes to study math problems, he had raised questions about pi, and their views have been published in the journal.<br> <br>Spring Festival this year, he seized the Internet three ancient Greek geometry problems. "To see the scale of the use of no ruler, compass trisection of any angle geometry nobody has solved the problem, hobby, I decided to find a way to crack."<br> <br>Lu should phase had used a dozen methods, but most of them will not work, this year in April,hogan rebel, he finally had thought was the correct solution. Lu should phase that his problem-solving ideas: first draw an arbitrary angle AOB,dW55H7nTov, the AB chord angle AOB are to be divided into three equal parts, and then the arc AB into two equal parts, and finally through the final proof of principle third-plane geometry min angle of the arc, arc trisection, the angle can also be three divisions. Lu should phase once papers are sent to several universities but did not reply.<br> <br>■ Proven crack is not established<br> <br>Lu phase should begin from the receipt of the phone, the reporter has to find a specialist or scholar than mathematical study of mathematics, but most people said: This title has been shown to not be achieved, verification is futile. Such as the late mathematician Hua Zeng said: "ruler with compasses trisection of any angle, just as impossible as walking on the moon." "Has always been a wrong proposition, put it as the right to do, to go from one wrong proposition in the wrong, it is a waste of social resources. "Some experts said. "I just want to have personal,canada goose pas cher, to help me to test my approach is right or wrong, if wrong, wrong in where?" Said Lu should phase.<br> <br>The afternoon of December 3, the first secondary school in Xi'an 4 math teacher Lu should help with his problem-solving methods to verify. Lu should phase in the demonstration, the teacher pointed out that his problem-solving ideas is right, but there are step is to use the ruler in a straight line to make the line outside the designated parallel lines, which can not be achieved, Lu should phase While he is doing it, but no theory to prove its existence.<br> <br>4 morning,uJ4J8lA966, Dean of Mathematics and Information Science, Shaanxi Normal University, PhD, Associate Professor Luo Xinbing reply to reporters,jx765pS7ST, Lu should have seen him with the paper, Firstly,57pnBzWKtR, some statement is not rigorous, and secondly,moncler sito ufficiale, some of the conclusions Lu phase did not prove to be so, in fact, did not crack this problem.<br> <br>■ Those interested research problems is a good thing<br> <br> the first secondary school in Xi'an Qin director of the Department, said Lu should crack mathematical problems with admirable dedication. She felt that the average person usually should be more mathematical knowledge to real life, real life research should also be a precondition.<br> <br>However, the ruler trisection angle was "sentenced to death" issue Lu should phase are ignorant. Through a web search found that even the ruler trisection angle to be "sentenced to death",Dk7g5cu96l, but still there are many math lovers tirelessly doing the question head.<br> <br> said that in the history of mathematics, and indeed there have been a number of ordinary people have made outstanding contributions, those interested research problems is a good thing. He suggested studying mathematics puzzle lovers before the election should be in one direction and then do a comprehensive understanding of the subject, and to acquire the necessary theoretical knowledge, this will be less to go many detours.<br> <br>When Lu should phase that many mathematical judgments and opinions of experts,peuterey spaccio outlet, he said, for the experts pointed out mistakes, he has to understand, but he will continue to study this problem. Our reporter Lizhi Yan<br><br>
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