Description:
Mathematical discussions and pursuits.
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curves on quadrics
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Hello, is there a projective quadratic surface that contains two non- intrersecting curves?
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Misconceptions - Jihad, War & Terrorism
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A bomb goes off in a marketplace in Jerusalem. A suicide bomber launches himself into a bus full of women and children in Tel Aviv. Foreign tourists get massacred at a holiday resort in Luxor, Egypt. Villages upon villages get annihilated in Algeria. The list of events worldwide which have come to symbolise the 'Islamic terror' are... more »
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Covariance matrix
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I have this matrix: A = 1 1000 2 1010 3 1020 4 1030 5 1040 6 1050 7 1060 8 1070 9 1080 10 1090 If the first column is the variable X and the second column is the variable... more »
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x^(x^(x^(x^x^...)))....)))) = 2
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Hello all, What is solution to x^(x^(x^(x^x^...)))....)))) = 2? ( That is x raised to x raised to x ..infinite times... = 2) One immediate thing comes to mind is: it is same as x^(the whole thing which is 2) =2 so x = sqrt 2 but if we consider, x^(x^(x^(x^x^...)))....)))) = 4 still we get (if apply same logic)... more »
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A Letter Of Einstein 1954
 
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Dear Newsgroup: The following news was on CBC on May 15,2008: [link] { Einstein letter dismissing God sells for $330,000 US Last Updated: Thursday, May 15, 2008 | 5:19 PM ET CBC News A letter written by Albert Einstein in which he dismissed belief in God as a “product of human weaknesses” was auctioned off Thursday for more than $330,000 US, destroying previous selling records of letters by the renowned physicist.... more »
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