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Genady

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Everything posted by Genady

  1. I think that the question implicitly refers to mature, egg-laying chicken. In this case, DNA of a chicken is not a chicken. So the chicken egg came first.
  2. I understand that galaxies are not expanding. I'm curious, what does space expands within a galaxy mean?
  3. Yes, its role is trivial. It doesn't play a non-trivial role.
  4. I'm saying that the concept of information doesn't play a role in the theory taught in this course. BTW, it is not an online course. It is a recording from the MIT class, just like all other MIT OCW courses.
  5. It is not about information.
  6. You are not mistaken. It didn't touch Shannon entropy yet, and I don't expect it to do so.
  7. Ukraine using drones to 'great effect' on Russian forces: Pentagon updates (yahoo.com)
  8. Can this diarrhea be stopped?
  9. MIT OCW has recently uploaded a new complete set of video lectures from this class: Theory of Computation | Mathematics | MIT OpenCourseWare I am 25% through and enjoying it.
  10. Et tu, Brute? The very last time we watched TV was the first Obama inauguration.
  11. In this case, what is a proper label for that kind of social media, the one with the algorithms?
  12. The vertical force he exert is equal to the weight. However, the weight itself, i.e. the heavy wheel doesn't stay above his head. If we look only at the vertical displacement of the wheel, it goes up and then down.
  13. I'm quite positive that the OP is talking about this video: No, it doesn't suggest that the weight changes. It is a pretty good demonstration and is followed by explanation.
  14. There is a summation in the formula (2) for A(), but in your calculation there is no summation. So, you have calculated only one components of A(3,2), rather than the value A(3,2). In fact, A(3,2) = 6. For example, if your objects are a, b, and c, then there are these 6 ways to distribute them in 2 distinguishable cells with no empty cells: a | bc b | ac c | ab bc | a ac | b ab | c
  15. A(4-k, 2) depends on k. So, it is not 7. It is different for different values of k.
  16. The general form is OK, but the variables are not. First, do it the way in which the eq (1) is given. I.e. use A(..., n) as given and derive A(r, n+1). It Should look like A(r, n+1) = .... A(r-k, n). Second, provide explanation for each component, i.e. what is the coefficient in front of A(r-k, n) and what values of k are you summing for.
  17. Russian officials' false statements in chronological order leading to the war: Oh, How They Lied. The Many Times Russia Denied Ukraine Invasion Plans (polygraph.info)
  18. You need to do it algebraically, not numerically. Did you see my suggestion about how to do it? Did you try it?
  19. Too complex to understand. Let AI to come up with patterns. The evolution, evolvability and engineering of gene regulatory DNA | Nature
  20. 1. You need to derive the equations for generic variables r and n. Working with specific values, such as r=4 and n=2, will not give you a general derivation. 2. The upper limit of summation is still wrong. 3. I don't know where the second part of these two simple sums came from. From nowhere? 4. You still did not derive equation (1). I've given you a fat hint for that. If you derive it, you will see where your summation limit is wrong.

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