Trying to remember the name of a constant

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SUMMARY

The discussion centers on the identification of Artin's Constant in relation to the doubling map function defined as f: [0,1] -> [0,1]. The specific function is f(x) = 2x for x <= 1/2 and f(x) = 2x - 1 for 1/2 < x <= 1. The initial condition is set as x[0] = 1/p, where p is a prime number, leading to a probability of approximately 0.38 for the orbit starting from this point to have a period of p-1. The constant in question is confirmed to be Artin's Constant.

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Deadstar
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Hey folks I'm trying to remember the name of this constant my lecturer mentioned.

Here's the scenario.

Take the doubling map.

f: [0,1] -> [0,1]

f(x) = 2x if x <= 1/2

2x - 1 if 1/2 < x <= 1.

Now start with an initial condition, x[0] = 1/p where p is a prime number.

What is the probability that the orbit starting with this point is of period p-1?

The answer is roughly 0.38... but I forget what this constant is called.
 
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I believe that would be Artin's Constant.
 
vr88 said:
I believe that would be Artin's Constant.

Great thanks for that!
 

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