Theory vs Theorem: Understand the Difference

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SUMMARY

The discussion clarifies the distinction between "theory" and "theorem," emphasizing that a theory encompasses a collection of related theorems and definitions, such as the theory of calculus or the theory of groups. The term "theorem" specifically refers to mathematically provable statements. Furthermore, the conversation highlights the existence of laws in mathematics, such as the Law of Excluded Middle and the Law of Large Numbers, which are also referred to as principles. The naming conventions in mathematics are subjective, as illustrated by the differing significance of Schur's Lemma and Mackey's Theorem.

PREREQUISITES
  • Understanding of mathematical terminology, including "theory," "theorem," and "lemma."
  • Familiarity with basic mathematical concepts such as calculus and group theory.
  • Knowledge of logical principles, including the Law of Excluded Middle.
  • Awareness of the subjective nature of mathematical nomenclature.
NEXT STEPS
  • Research the foundational concepts of the theory of calculus.
  • Explore the principles of group theory and its applications.
  • Study the Law of Large Numbers and its implications in probability theory.
  • Investigate the significance of various mathematical lemmas and theorems in advanced mathematics.
USEFUL FOR

Mathematicians, educators, students in advanced mathematics, and anyone interested in the philosophical aspects of mathematical definitions and nomenclature.

Physics is Phun
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What's the difference?
 
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"Theory" usually refers to the physical world and "theorem" refers to the mathematical world.
 
A theorem is a mathematically provable statement.

A theory in mathematics is usually thought to be a non-trivial collection of related theorems and definitions like, the theory of calculus, theory of groups, etc.
 
this is sort of related, but why are some theorems in physics called laws? why arent there "laws" in math too?
 
There are. Law of excluded middle, for instance. Law of large numbers. They are also called principles. There is no immutable naming law, or principle or theorem. One man's lemma is another mans theorem. For instance's Schur's Lemma is a vital theorem, but Mackey's Theorem is just a lemma... (though things starting if...then... ought to be called propositions).
 

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