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Mathematics
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David H's user avatar
David H's user avatar
David H
  • Member for 3 years, 6 months
  • Last seen more than 3 years ago
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Top posts
13
Whether there is a prime in sequence $\{1,12,123,1234,12345,123456,1234567,12345678,123456789,12345678910, \cdots\}$
Mar 31, 2021
3
Giving every solution of the equation $m^n=\overline{nAm}$ or proving there are no solutions to the equation
Jan 16, 2021
2
A trigonometric function comparing with $0$
Feb 17, 2021
1
Calculate the maximum of $\sum_{1\le i<j<k\le 100}a_ia_ja_k$ where $\sum a_i = 2007$.
Jan 16, 2021