Derek Elkins‭

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A quiet enigma. We don't know anything about Derek Elkins‭ yet.

Posts

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Q&A Does every divergence-free vector field arise as the curl of some vector field?

posted 8mo ago by Derek Elkins‭ · edited 8mo ago by Derek Elkins‭

Answer

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Q&A Why always rationalize a denominator?

posted 10mo ago by Derek Elkins‭

Answer

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Q&A What're the orders for equation expressing?

posted 2mo ago by Derek Elkins‭

Answer

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Q&A Can we constructively find a third element of a set $X$ satisfying $X \cong X \times X$ given two distinct elements?

0 answers · posted 1y ago by Derek Elkins‭

Question constructive-logic type-theory

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Q&A Existence of a set of all sets

posted 1y ago by Derek Elkins‭ · edited 1y ago by Derek Elkins‭

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Q&A Why does this definition of generalized forces work?

posted 9mo ago by Derek Elkins‭

Answer

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Q&A How to show if a set is simply connected?

posted 5mo ago by Derek Elkins‭

Answer

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Q&A What was Justice Scalia's mathematical mistake in Penry v. Lynaugh (1989)?

posted 5mo ago by Derek Elkins‭

Answer

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Q&A Computational hardness of the uniform halting problem

posted 1y ago by Derek Elkins‭

Answer

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Q&A Why does “unless” mean “if not”?

posted 12mo ago by Derek Elkins‭

Answer

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Meta Can this site contains Physics's Math question?

posted 6mo ago by Derek Elkins‭

Answer

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Meta Are challenge-like questions like these considered on-scope in Mathematics CD?

posted 4mo ago by Derek Elkins‭

Answer

66%

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Meta Marketing Math Codidact

1 answer · posted 10mo ago by Derek Elkins‭ · last activity 10mo ago by The Amplitwist‭

Question discussion

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Q&A methodology of integration by parts ($e^{ax}\cos (bx+c)\mathrm dx$)

posted 3mo ago by Derek Elkins‭ · edited 3mo ago by r~~‭

Answer

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Q&A Getting backward of partial differentiation's chain rule

posted 2mo ago by Derek Elkins‭ · edited 1mo ago by Derek Elkins‭

Answer

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Reputation		559
Number of top-level posts		2
Number of answers		16
Sum of received votes (up minus down)		59
Number of edits made		6

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Answers		16
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Derek Elkins‭

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