Titlebook: Was ist Mathematik?; Richard Courant,Herbert Robbins Book 19924th edition Springer-Verlag Berlin Heidelberg 1992 Algebra.Algebra der Zahlk

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Richard Courant,Herbert Robbinsdominating set problem, and for ??≥?.???1 this is the PDS problem. Our hardness threshold for PDS also holds for ?-round PDS for all ??≥?4. We give a PTAS for the ?-round PDS problem on planar graphs, for .. We study variants of the greedy algorithm, which is known to work well on covering problems,

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), the algorithm returns . element-disjoint Steiner trees. Using this algorithm, we get an approximation algorithm for the edge-disjoint version of the problem on planar graphs that improves on the previous approximation guarantees. We also show that the natural LP relaxation of the planar problem h

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is true. Our participation in the truth of a philosophical doctrine makes possible a genuine and just presentation, defence, or criticism. The appropriate relation to a philosophy is obviously that of philosophizing-along-with. Philosophizing-along-with takes the form of a sharing in our common rela

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Electoral Turnout: Mobilization in All Its Diversityts lower than in the 2007 second round (82% and 84% respectively) and much lower than the record level reached in the second round of the 1974 presidential election (87.3%). During the two presidential elections won by Fran?ois Mitterrand in 1981 and 1988, a very high percentage of French voters went to the polls—86.8% and 85%, respectively.

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Computational Quantum Mechanics for Materials EngineersThe EMTO Method and

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