Erick Wong
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Registered User
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Jan 31 |
awarded | ● Commentator |
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Jan 31 |
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Representations with Triangular Numbers I'm embarrassed to ask, but why am I unable to edit or delete the malformatted comment above? |
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Jan 31 |
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Representations with Triangular Numbers @bn Not quite. $a_1$ will be about $\sqrt{2n}$ not $\sqrt{n}, and similarly for each of the remaining terms. This introduces a multiplicative error as large as $2^{O(\log \log n)}$ which is certainly not $O(1)$. |
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Jan 25 |
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Is every positive multiple of 6 the sum of two primes? @Will Sawin: Less than one year ago, Harald Helfgott uploaded a paper on [arXiv](arxiv.org/abs/1205.5252) with significant technical improvements in estimating the minor arcs of $\sum e(\alpha p)$. The abstract suggests there is only a modest gap between what is known computationally (by very recent work of David Platt) and what is needed to verify ternary Goldbach. I do not know if this has been pursued further. |
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Jan 24 |
accepted | sorting two paired lists of real numbers to minimize consecutive absolute differences |
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Jan 23 |
answered | sorting two paired lists of real numbers to minimize consecutive absolute differences |
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Jan 15 |
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Proving a determinant = 0 @wccanard I agree that (C), taken only as a sufficient condition for $\det A = 0$, doesn't need a name. But Frobenius-König also yields a partial converse, that any configuration of zeros which guarantees a zero determinant necessarily contains this form (at least when working over a large enough field). |
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Jan 13 |
awarded | ● Critic |
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Jan 13 |
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Proving a determinant = 0 The answer to your minor question is the Frobenius-König theorem. |
