Number Theory Advice: Struggling with Proofs in Course

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Discussion Overview

The discussion revolves around the challenges faced by an undergraduate student in a number theory course, particularly in constructing proofs. The scope includes personal experiences with coursework, the nature of mathematical proofs, and differing perspectives on the role of definitions in understanding proofs.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant expresses significant difficulty with proofs in number theory, contrasting it with previous courses like Calculus and Differential Equations.
  • Another participant asks if the original poster had experience with proofs in other courses.
  • The original poster clarifies that this is their first course involving logical proofs, having only encountered computational proofs in Calculus II.
  • One participant emphasizes the importance of memorizing and understanding definitions for constructing proofs.
  • Another participant challenges this view, arguing that understanding the foundational role of definitions and combining them is more crucial for proof construction than mere memorization.

Areas of Agreement / Disagreement

Participants express differing views on the role of definitions in proofs, with some advocating for memorization and others emphasizing understanding and application. The discussion remains unresolved regarding the best approach to mastering proofs.

Contextual Notes

There is a lack of consensus on the effectiveness of memorizing definitions versus understanding their foundational implications in the context of proof construction.

only_huce
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I am an undergrad taking my first course in number theory. For some reason, this is the hardest course I have ever taken in my life. It puts Calculus and Differential Equations to shame in my honest opinion.

My question is, am I the only one who thinks so? I mean, I go over the chapters, attend every class, and I can do any problem or apply any theorem when it involves actual numbers. However, when I have to do proofs (which is 70% of the coursework) I still find myself struggling. It's half-way through the semester and constructing proofs still hasn't clicked for me. When doing the HW, I find myself spending over 2 hours on a problem only to prove it half way.

Am I doing something wrong? Any advice is greatly appreciated.
 
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Did you have to do proofs in your other courses?
 
No, I'm an engineering major deciding to pursue a math minor therefore this is the first class I've ever taken involving proofs.

I mean I did some proofs in calculas 2, however they were more computational and involved integrating a formula rather than logical which is what I am encountering in this course.
 
Definitions, definitions, definitions.

In mathematics, definitions are "working" definitions. You use the exact wording of definitions in proofs. The absolute best thing you can do is learn definitions by heart and understand what they mean.
 
I'd beg to differ on that matter of semantics; definitions in mathematics are absolute definitions for the given theory. To grasp a proof what's required is not committing them to memory, but following from the foundations they establish.

Considering the definitions you're working with in different ways and combining them is what leads to proofs of propositions most easily.
 

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