Simple Proof Check - Number Theory

  • Context: Undergrad 
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Discussion Overview

The discussion revolves around a proof attempt in number theory, specifically concerning the divisibility of squares of natural numbers by 6. Participants are examining the validity of the proof and seeking feedback on potential logical flaws or justifications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant expresses uncertainty about the justification of the equation n^2/6 = 6k^2, stating it is central to the proof.
  • Another participant claims to have identified a pattern, providing an example where the 15th natural number squared is divisible by 6, suggesting that their findings support their approach.
  • Multiple participants request clarification and insights on how to address the concerns raised about the proof, indicating a desire to salvage the argument.
  • A suggestion is made to use the unique prime factorization of integers and the property of square numbers having even exponents in their prime factorization as a potential justification for the logic presented.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are competing views regarding the validity of the proof and the justification of the claims made. The discussion remains unresolved with ongoing inquiries and challenges to the initial logic.

Contextual Notes

There are limitations regarding the assumptions made in the proof, particularly concerning the justification of the equation n^2/6 = 6k^2 and the conditions under which it holds. The discussion also highlights the need for clarity in the application of prime factorization in relation to the proof.

Fisicks
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Recently I've stumbled upon number theory and decided to order a book which is coming soon so in the mean time I've decided to try what looked like an easy proof to kinda practice on. So tell me where my logic fails or where it surprisingly doesn't. criticism appreciated.

http://img210.imageshack.us/img210/3406/img054i.jpg"
 
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The "investigate" line doesn't justify why
n^2/6 = 6k^2
which is the crux of the proof.
 
well i just found a pattern, and it holds.

ex. the 15th natural number squared divisible by 6 is 8100. So K is 15, and you have
8100/6=6*15^2
1350=1350
 
Can someone give me more insight on what greathouse said, and how to salvage this proof? Its not like n^2/6=6k^2 isn't true for my conditions.
 
Fisicks said:
Can someone give me more insight on what greathouse said, and how to salvage this proof? Its not like n^2/6=6k^2 isn't true for my conditions.

try every integer has a unique prime factorization and represent a number divisible by 6 as a product of its prime factors. explain why square numbers have only even exponents in their prime factorization. Use these to justify your logic.
 

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