User Carl Schildkraut - Mathematics Meta Stack Exchange

Carl Schildkraut

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User who posts ongoing contest problems

Oct 8, 2017

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35

Sequence that is neither increasing, nor decreasing, yet converges to 1

33

Is this proposed method of finding primes valid? If so, would it be effective?

28

Use 2, 0, 1 and 8 to make 109

24

Prove $\left|1+z_1\right| +\left|1+z_2 \right| + \left|1+z_1z_2\right|\geq 2$

22

Does there exist a bivariate polynomial that is positive exclusively in the 1st quadrant?