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English Language & Usage
David C. Ullrich's user avatar
David C. Ullrich's user avatar
David C. Ullrich's user avatar
David C. Ullrich
  • Member for 6 years, 6 months
  • Last seen more than 5 years ago
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Nothing about me is of any interest whatever.

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"then" starts a new sentence?
Jan 17, 2018
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82
Are there theoretical applications of trigonometry?
63
Did Joseph Fourier ever make a pure mathematical mistake?
58
What is the average rational number?
50
Is every noninvertible matrix a zero divisor?
41
Does every infinite field contain a countably infinite subfield?