The Strange Occurrence of Pi Everywhere

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Discussion Overview

The discussion revolves around the frequent appearance of the mathematical constants pi and e in various contexts that do not directly involve circles or exponential growth. Participants explore the implications of these occurrences in physics and mathematics, questioning the underlying reasons for their significance in different phenomena, such as electric potentials and oscillations.

Discussion Character

  • Exploratory
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • Some participants find it strange that pi appears in contexts unrelated to circles, such as electric potentials and Fourier series, suggesting a deeper mathematical connection.
  • Others argue that approximations to circles and spheres are common in various physical situations, leading to the appearance of pi.
  • One participant notes that periodic motion can be described using circular coordinates, hinting at the geometric nature of these phenomena.
  • There is curiosity about the relationship between pi and e, particularly in the context of the equation e^{i\pi}+1=0, with some seeking a physical explanation for this mathematical identity.
  • Some participants express skepticism about the need for a physical explanation of mathematical expressions, suggesting that such inquiries may overlook the nature of mathematical abstraction.
  • Discussion includes the possibility of a geometrical proof of e^{i\pi}+1=0 that would be recognizable to ancient mathematicians like Euclid and Archimedes.
  • Concerns are raised about the limitations of applying Euclidean geometry to physical reality, particularly in advanced fields like general relativity.

Areas of Agreement / Disagreement

Participants exhibit a mix of agreement and disagreement regarding the significance of pi and e in various contexts. While some acknowledge the mathematical connections, others question the necessity of physical explanations, leading to an unresolved discussion on the nature of these constants.

Contextual Notes

Participants express uncertainty about the implications of approximations and the definitions of mathematical concepts, particularly in relation to physical interpretations of mathematical identities.

  • #31
GibZ:How does it related to the observation of the arc and sin of a smaller and smaller angle? Did you mean the tan of 1? But yes that is correct, involving radians will bring pi into the matter, naturally

I am talking about the derivative of the sine, which is the cosine, we have to find lim \frac{sinh}{h}\rightarrow1 h\rightarrow0 This can be found in almost any Calculus book.

It's when we get to the Calculus that we have to use radians. And it's only at the time of the Calculus that the Leibniz found his formula.

The original definition of the sine is the side opposite over the hypotenuse. But in the Calculus we are using, what can be called circular trigonometric functions, where the angle is defined in terms of the unit circle.
 
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  • #32
O ok see what you were talking about now. Thank you for your patience and help Robert.
 
  • #33
Your welcome!
 
  • #34
Is it possible, given the infinite possible "base" number systems that can be used (we use base 10 of course) that e and pi have a very simple definition in one "native" base system?

This lends itself to a creator of course. Or an influencer. ZapperZ made a very good analogy.

I myself am a firm agnostic... but that doesn't mean there isn't something out there. We just haven't found it yet, so I'll wait.
 
  • #35
I don't see the problem, pi and e have the same definitions in any base, and the aren't extremely complex anyway.

In any base e is the unique number that makes the integral true: \int^e_1 \frac{1}{dx} dx = 1 IE e is the unique number where the area under the graph of 1/x from 1 to e is equal to 1.

Also, in any base, pi units is half the length of the circumference of the unit circle, (though only in a Euclidean space), or the smallest positive value of x for which sin (x) is equal to 0.
 

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