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Showing 1 to 3 of 3 for “"descent systems"”.
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Descent Systems, Eulerian Polynomials and Toric Varieties
… count permutations in S_n by their number of descents, give the h-polynomial/h-vector of the simple polytopes known as permutohedra, the convex hull of the Sn -orbit for a generic weight in the weight lattice of Sn . Therefore the Eulerian polynomials give the Betti numbers for certain smooth …
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African-Virginian Extended Kin: The Prevalence of West African Family Forms among Slaves in Virginia, 1740-1870
… family, the centrality of women, and flexible descent systems. I contend that these three cultural characteristics were transferred by slaves to Virginia. Runaway slave advertisements from the Virginia Gazette show the cultural makeup of slaves in eighteenth-century Virginia. I use these …
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Design and Performance of a Communications System for a Low-Cost High Altitude Balloon Platform for Troposphere and Stratosphere Research
… It also presents the development of controlled descent systems based on reliable COTS components that allow high resolution unperturbed measurements during the descent of the balloon payloads. Both single and double balloon configurations for a controlled descent are investigated while …