منابع مشابه
Hilbert Basis Theorem 1 Jonathan Backer University of Alberta Edmonton Piotr Rudnicki University of Alberta Edmonton
One can prove the following propositions: (1) Let A, B be finite sequences and f be a function. Suppose rngA∪rngB ⊆ dom f. Then there exist finite sequences f1, f2 such that f1 = f · A and f2 = f · B and f · (A a B) = f1 a f2. (2) For every bag b of 0 holds decomp b = 〈〈∅, ∅〉〉. (3) For all natural numbers i, j and for every bag b of j such that i ¬ j holds b↾i is an element of Bags i. (4) Let i...
متن کاملUniversity of Alberta Edmonton Canada
Multiscale Computation and Analysis for Schrödinger-Poisson System in Heterogeneous Materials Liqun Cao Chinese Academy of Sciences, China [email protected] In this talk, we discuss the multiscale computation for Schrödinger-Poisson system arising from the electronic properties of semiconductors such as quantum wells, wires and dots, and CMOS transistor. We first introduce the Schrödinger equat...
متن کاملHigher Lawrence configurations
Any configuration of lattice vectors gives rise to a hierarchy of higher-dimensional configurations which generalize the Lawrence construction in geometric combinatorics. We prove finiteness results for the Markov bases, Graver bases and facet posets of these configurations, and we discuss applications to the statistical theory of log-linear models.
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ژورنال
عنوان ژورنال: The Lancet
سال: 1920
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(00)80870-3