نتایج جستجو برای: thron
تعداد نتایج: 38 فیلتر نتایج به سال:
M. Sanchez, W. W. M. Allison, G. J. Alner, D. S. Ayres, W. L. Barrett, P. M. Border, J. H. Cobb, D. J. A. Cockerill, H. Courant, D. M. Demuth, T. H. Fields, H. R. Gallagher, M. C. Goodman, T. Joffe-Minor, T. Kafka, S. M. S. Kasahara, P. J. Litchfield, W. A. Mann, M. L. Marshak, R. H. Milburn, W. H. Miller, L. Mualem, J. K. Nelson, A. Napier, W. P. Oliver, G. F. Pearce, E. A. Peterson, D. A. Pet...
We study a restricted form of list colouring, for which every pair of lists that correspond to adjacent vertices may not share more than one colour. The optimal list size such that a proper list colouring is always possible given this restriction, we call separation choosability. We show for bipartite graphs that separation choosability increases with (the logarithm of) the minimum degree. This...
Different angiographic techniques (e.g., multiple oblique views, angiotomography, and magnification angiography) have been proposed to improve the diagnosis of cerebral vascular malformations and occlusive diseases. However, these methods are either time-consuming or necessitate repeated injections of contrast medium. The common goals of all these techniques are (1) to achieve a documentation o...
concept of nearness (contiguity, proximity) between families of sets (finite families, pairs). Again F. Riesz in 1908 was the first to explore this path by defining a "Verkettung" between pairs of sets. He did not require A n B ~ ¢ ~ A is "near" B. Today one generally makes this assumption and thus obtains c (A) = [x: [x] is "near" A]. The assumptions CI , C2 , C3 follow from requirements usual...
We study the triangular array defined by Graham–Knuth–Patashnik recurrence $T(n,k) = (\alpha n + \beta k \gamma)\, T(n-1,k)+(\alpha' \beta' \gamma') \, T(n-1,k-1)$ with initial condition $T(0,k) \delta_{k0}$ and parameters $\mathbf{\mu} (\alpha,\beta,\gamma, \alpha',\beta',\gamma')$. show that family of arrays $T(\mathbf{\mu})$ is invariant under a 48-element discrete group isomorphic to $S_3 \...
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