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Answer a question more than 60 days later with score of 5 or more. This badge can be awarded multiple times.

Douglas Lind

2,73825 silver badges18 bronze badges

earned this badge 5 times.

Monic polynomial with integer coefficients with roots on unit circle, not roots of unity?

Awarded Feb 10 at 23:05

How do I make the conceptual transition from multivariable calculus to differential forms?

Awarded Apr 13, 2020 at 12:45

Most interesting mathematics mistake?

Awarded Apr 11, 2015 at 23:53

Suggestions for good notation

Awarded May 6, 2014 at 7:35

When is a monic integer polynomial the characteristic polynomial of a non-negative integer matrix?

Awarded Apr 4, 2011 at 0:05

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