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#1




Does 0.999... = 1
In mathematics, 0.999... = 1
0.999... = (3) x (0.333...) 0.999... (3) x (1/3) 0.999... = 1 In physics, 1  1 ≠ 0 because it’s impossible for any two entities to be exactly identical. Let x = 1  (0.999...) Would it be possible to define x ? 
#2




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#3




Oh Lord not again...

#4




Are you using identical in the sense of occupying the same position in time/space?



#5




Yes, seem to recall a very long thread on this subject...

#6




But was it very long, or infinite?

#7




I would be very interested in reading the previous thread. How do I find it?

#8




I say... (won't. no I won't.) 
#9




In a fairly recent thread on this, we could have said that your x equaled the probability that the OP (in the other thread) would ever admit that their line of reasoning was invalid



#10




There seem to be problems describing GR and QM using current mathematics because 1/0 and 1/infinity are undefined. Zero defined as a unitless constant based on the Planck constant could maybe help define 1/0 and 1/infinity.

#11




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#12




The title question is answered comprehensively in the previous thread. As for the additional questions, Planck's constant is in fact nonzero (that is kind of the point!). You can even work in a system of units where it equals 1 or 2π or something. And if there is a question concerning renormalization, which is an interesting topic, I will leave it to you to ask.

#13




Physics uses math as a language. Math is more fundamental. More importantly, math is defined and subject to proofs. The role of zero in mathematics has been investigated and rigidly defined in many ways.
Math has a huge number of internally consistent forms that are not what are taught in high school, and some of them have been shown to be extremely useful in solving some physical problems. I don't know of any that redefine zero that are of use in GR and QM, though. Nevertheless, I doubt finding one would solve your issue. Quote:

#14




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Please read the linked threads. Since we have discussed this many times before, I'm going to close this for now. If you have additional questions after reading the threads, PM me and I will consider reopening this. Colibri General Questions Moderator 
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