Recent content by rpenner
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Graduate Negative moving coordinates and Time Dilation
It does not harm me that you are howlingly ignorant about the mathematics of space-time. But, it does bothers me that you have brought your broken understanding to three different forums, in a language which you have not mastered, and sought to convince people by misleading problems that are not...- rpenner
- Post #27
- Forum: Special and General Relativity
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Graduate Negative moving coordinates and Time Dilation
This is a deceptive problem. The event O has t = t'. The starting event is when t = 0 and x' = -7/8 and the ending event is when x = 0 and x' = -7/8. The starting event is when t' = 0 and x' = -7/8, which is a different event than in the first question. Comparing the two measures of time tells...- rpenner
- Post #16
- Forum: Special and General Relativity
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Graduate Negative moving coordinates and Time Dilation
I thought it was physically obvious, since you want to talk about an elapsed time you need two events, and since you are talking about the event where a clock at x' = -7/8 light-seconds intersects something else at x = 0, that gives Q as the unique intersection. Since you insist on calling...- rpenner
- Post #14
- Forum: Special and General Relativity
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Graduate Negative moving coordinates and Time Dilation
The original poster of this thread originally titled another thread Time dilation is false. Event P is not well agreed upon. The OP seems to have chosen t = 0 and x' = -7/8 light seconds. While grav-universe prefers t' = 0 and x' = -7/8 light seconds. Event Q is well agreed upon with x = 0...- rpenner
- Post #10
- Forum: Special and General Relativity
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Graduate An elementary problem equivalent to the Riemann hypothesis
This is based on \sigma(n) = \sum_{d|n}d < e^{\gamma} n \log \log n for all n >= 5041 being logically equivalent to the Riemann Hypothesis as shown in Guy Robin, Grandes valeurs de la fonction somme des diviseurs et hypoth`ese de Riemann,J. Math. Pures Appl. (9) 63 (1984), 187–213. See also...- rpenner
- Post #3
- Forum: Linear and Abstract Algebra
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LaTeX Introducing LaTeX Math Typesetting
I am under the impression that typesetting software, like troff, predated both TeX and the internet. A quick survey of Google supports this clearly. TeX was born in 1982, which was in the infancy of "The Internet" http://www.tug.org/ftp/historic/systems/unix/TeX2.9/tex82/TeXdoc/history.txt...- rpenner
- Post #714
- Forum: MATLAB, Maple, Mathematica, LaTeX