Find the intersection point of an infinite power tower and a primorial

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Discussion Overview

The discussion revolves around finding the intersection point of an infinite power tower function, defined as ##f(x) = {^{\infty}x} = x \uparrow \uparrow \infty##, and the primorial function ##g(x) = p_{x}##, where ##p_x### represents the product of the first ##n## prime numbers. Participants explore the definitions and behaviors of these functions, particularly in relation to their intersection.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant defines the power tower function and provides an example of the primorial function, suggesting the intersection point is ##(m, f(m))##.
  • Another participant questions the definition of the power tower function, stating it is defined and finite for the interval ##e^{-e}
  • A participant raises a question about the definition of the primorial function for non-integer values, indicating a potential ambiguity in its application.
  • Another participant reiterates the question regarding the definition of the primorial for non-integers, suggesting a need for clarification.
  • One participant expresses interest in finding the best estimation of the intersection using curve fitting techniques.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the definitions of the functions involved, particularly regarding the primorial function for non-integers. Multiple competing views remain regarding the behavior of the power tower function and its intersection with the primorial.

Contextual Notes

The discussion highlights limitations in the definitions of the functions, particularly concerning the behavior of the primorial function for non-integer inputs and the specific interval for the power tower function.

Who May Find This Useful

Readers interested in advanced mathematical functions, particularly those involving infinite sequences and products, as well as those exploring intersections of such functions.

Saracen Rue
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TL;DR
Find the point of intersection between ##f(x) = {^{\infty}x} = x \uparrow \uparrow \infty## and ##g(x)=p_{x}###
Consider ##f(x) = {^{\infty}x} = x \uparrow \uparrow \infty## and ##g(x)=p_{x}###, where ##p_x### is the primorial function and is defined such that ##p_n### is the product of the first ##n## prime numbers. For example, ##p_{4}### ##= 2×3×5×7=210##

Let the point of intersection be defined as ##(m, f(m))##; determine the value of both ##m## and ##f(m)## correct to five significant figures.
 
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I think power tower is defined and finite for [tex]e^{-e}<x<e^{1/e}[/tex]. How g(x) is defined for x in this region?
 
How do you define the primorial for non-integers?
 
TeethWhitener said:
How do you define the primorial for non-integers?
Im looking for the best estimation using a curve fitting.
 

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