What geometric applications do prime numbers have?

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Discussion Overview

The discussion explores the geometric applications of prime numbers, particularly in relation to arrangements of objects and the properties of shapes such as rectangles. Participants examine whether prime numbers have any geometric significance or counterexamples to the idea that they do not.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests that Fibonacci numbers are connected to geometry, while prime numbers seem to lack such connections and asks for counterexamples.
  • Another participant states that a set of n objects can be arranged in a rectangular array if and only if n is not prime, implying a geometric limitation of prime numbers.
  • A question is posed regarding the size of sets of points forming (n>1)-dimensional rectangular quadrilaterals, comparing those numbered by primes and non-primes, and whether this holds for both real and integer n.
  • A later post seeks to clarify whether the count of rectangles containing a total non-prime number of points is greater than those containing a total prime number of points, indicating a specific case for consideration.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between prime numbers and geometry, with some proposing specific geometric properties related to prime and non-prime numbers, while others question or seek clarification on these ideas. The discussion remains unresolved regarding the geometric implications of prime numbers.

Contextual Notes

The discussion includes assumptions about the definitions of geometric arrangements and the properties of prime versus non-prime numbers, which may not be fully articulated or agreed upon.

Loren Booda
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The Fibonacci numbers seem intimately connected with geometry. Prime numbers appear to avoid geometrics, however. Can you give some counterexamples of this latter statement?
 
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A set of n objects can be place in an i by j rectangular array with i and j both greater than one if and only if n is NOT prime.
 
Is the set of points constituting (n>1)-dimensional rectangular quadrilaterals and numbered non-prime larger than such a set numbered prime? Does this hold for both n real and n integer?
 
Last edited:
Rectangles and prime cardinality

Sorry for the mix-up.

Please consider the special case:

"Is the count of all rectangles each containing a total non-prime number of points greater than the count of all rectangles each containing a total prime number of points?
 
Last edited:

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