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A comment on A visual proof that a^2 – b^2 = (a + b)(a – b). Parent comment

Re:A visual proof that a^2 – b^2 = (a + b)(a – b) by karmakaze on Sunday December 15, 2024 @12:59PM (#42424825)
For those thinking this doesn't hold, note that "wlog" means without loss of generality (having numerous examples in proofs).
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Re:A visual proof that a^2 – b^2 = (a + b)(a – b) by lizzas on Sunday December 15, 2024 @02:07PM (#42425267)
A good example of the shortening of proofs. Like "Observe that... {unproven thing}"

It is not necessarily bad but explains why every step isn't always proven. To avoid tedium and long papers.

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