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Ghideon last won the day on March 28

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    M.Sc. Computer Science and Engineering
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  1. @Trurl there are some Latex errors in your message, it is not readable. Here is a screenshot of how it looks like:
  2. How did you get the number 3? From your formulas or by some other method? I do not understand. If that is due to my lack of abilities or lack of valid explanations, I'll let others judge. And I am still waiting for a connection to RSA encryption and prime factorisation of large integers.
  3. I am looking forward to a connection to RSA encryption and prime factorisation of large integers. Ok. I'll try two examples: 8633, 8637. Both are semi primes. NSolve [( x^4/((8637)^2 + x)) == 1] x≈-92.935 x≈92.935 NSolve [( x^4/((8633)^2 + x)) == 1] x≈-92.914 x≈92.914 @Trurl Is this helpful for someone looking for the prime factors of the numbers 8633 and 8637? If so, how?
  4. Unless you want a general list as already provided above some context would be good to sort out what possibilities we have. Example: we can have face recognition instead of a password to open a smartphone. An X.509 certificate may be useful instead of a password in a server-to-server scenario. The opposite, unlocking a smart phone with an X.509 certificate or have servers identify themselves via face recognition may not be a good idea at all.
  5. As far as I know that is an unsolved problem at this time*. *) Assuming the context is computer science where a one-way function is a function that is easy to compute on every input, but "hard" to invert given the image of a random input. https://en.wikipedia.org/wiki/One-way_function;
  6. Interesting link, thanks! Is the above a speculation of yours or by the authors of the article? I did a quick read of the Astrophysical Journal Letters: from https://iopscience.iop.org/article/10.3847/2041-8213/ab5b9f, linked from the phys.org source.
  7. My personal (and rather naive) answer: We do not know if the universe* is infinite or finite and if there are infinite or finite number of particles. Mathematics contain tools and concepts usable for both cases. *) The observable universe is finite and contains a finite amount of matter.
  8. Ok. Very old phones have no camera. So a newer phone may be required to solve your issue. (You may get more helpful responses if you provide more context)
  9. As far as I know the constant G is required in General Relativity to get time dilation and other predictions in the first place. Saying "G in the GRT equation must be a variable whose value is inversely proportional to the time dilation" sounds like a contradiction. Which means that G is constant.
  10. Ok! Thanks for clarifying. Do you mean that black holes as described by established theories do not exist? Is your claim that General Relativity is wrong?
  11. I know about the gravitational redshift but I do not see the connection to a change in size. Your statements seem to imply that objects very near the event horizon of a black hole will be extremely long according to an observer far from the black hole. When the redshift is extreme the change in length will be extreme. Is this a correct interpretation of your opening post?
  12. How come the tree is taller when measured by a remote observer, higher up in the gravity well ? How is that measurement performed? I'm curious, I can't remember reading about such an effect (but my GR knowledge is very limited).
  13. It depends on what the code represent. As said above many phones can recognise a QR code by using the native camera app. Interpreting the QR code and then triggering the correct action may require scanning the QR code with the applicable 3rd party application.
  14. Using @Sensei recommendation: NSolve [(x^4/(35794234179725868774991807832568455403003778024228226193532908190484670252364677411513516111204504060317568667^2 + x)) == 1,x] Gives the result: (Note: I do not have access to a local installation, I used wolframalpha.com)
  15. No worries @joigus! (In spirit of your opening post I showed the picture to one of my kids. Result was an interesting conversation about nature, digital art, Lord of the Rings, Angkor Wat, fiction and non-fiction.)
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