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Mathematics
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Oscar Lanzi's user avatar
Oscar Lanzi's user avatar
Oscar Lanzi
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72
Is the "determinant" that shows up accidental?
Mar 25, 2018
67
Are rational points dense on every circle in the coordinate plane?
Oct 23, 2018
36
Alternating series; first term is 0. Do I have a problem?
Dec 31, 2016
35
Is the arc length always irrational between two rational points?
Jul 11, 2019
34
Multiple-choice: sum of primes below $1000$
Jan 30, 2017
32
Do sum of natural numbers and sum of their squares represent uniquely the summands?
Sep 26
30
Why does the circle intersect the line?
Jun 3, 2018
29
Are there non-zero real numbers equal to their "average decimal digit"?
Apr 16
28
Is it possible to explain geometrically why $\arctan (1/2) +\arctan (1/3) = 45$ degrees?
Aug 15, 2023
27
What problems have been frequently computationally verified for large values?
Aug 6, 2018

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How to remove downvote after the grace period expired?
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Is it generally true that non-tag badges can't be revoked due to downvotes?
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How to copy page content including all TeX commands
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How can I counteract offensive comments?
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Buyer's remorse, MSE style

Top network posts

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78
Why don't we explode after drinking water?
72
Why doesn't frozen sugar solution taste sweet?
55
How do they ensure there is one electron on an oil drop in Millikan's oil drop experiment?
47
Did Apollo 13 produce any scientific results?
38
What is the pressure at the center of the Earth?