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mathematic

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Everything posted by mathematic

  1. mereotopological - Did you invent this word? What does it supposed to mean?
  2. I agree with Fermi. Interstellar distances are a the main problem.
  3. Define numbers. As is the question doesn't make sense.
  4. I know very little about this subject. However movement like this usually means they need more room.
  5. Could you summarize? Is there a question?
  6. Science fiction is your best bet.
  7. Whenever I write a sum in Latex, the limits appear forward of the sum sign. I have seen many instances where the limits are below and above. What is the code to get them there?
  8. Make up a definition. Will it be meaningful?
  9. Any description beyond current expansion from the big bang is pure speculation.
  10. Mathematics is flexible. You can define such concepts, such as negative dimension or sets with a negative number of elements and do what you want with them. It would be very hard to give them any physical meaning.
  11. The notation is math, mot physics. https://en.wikipedia.org/wiki/Christoffel_symbols
  12. Clarify your question. By example?
  13. What has Robert Stephenson got to do with it??
  14. No effects on humanity. One immediate consequence, physicists would better understand black holes.
  15. Based on special relativity, there is no center of motion. The best one can .do is define the center of the solar system as the center of mass
  16. Everyone can speculate, but only the original poster can tell us what is meant. So far there has been no response.
  17. I am under the impression that CO2 in the atmosphere acts as a heat shield against heat escaping from the earth, not as a source.
  18. Most of physics and much engineering needs calculus. I suggest you learn a little bit about the subjects you are asking about.
  19. The x in sin(x) has no physical units. It is usually in terms of radians or degrees. sin(x) also has no physical dimension - usual definition is the ratio of two lengths.
  20. Execution time strongly depends on how well written the program is.
  21. Article looks like philosophy not physics.
  22. Time travel ahead is possible (use idea of twin paradox), but you can never go back.
  23. I became aware of it a long time ago. I never knew it had a name.
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