The cartesian product is an operator of the relational algebra which extends to relations the usual notion of cartesian product of sets. Since the sets of attributes of the input relations are disjoint, in R 1× R 2 each tuple of R 1 is combined with each tuple of R 2; moreover the a...
The cartesianproductsof sets can be considered as the product of two non-empty sets in an ordered way. The final product of the sets will be a collection of all ordered pairs obtained by the product of the two non-empty sets. In an ordered pair, two elements are taken from each of th...
The decomposability of a Cartesian product of two nondecomposable manifolds into products of lower dimensional manifolds is studied. For 3-manifolds we obtain an analog of a result due to Borsuk for surfaces, and in higher dimensions we ... S Kwasik,R Schultz - 《Homology Homotopy & Applicatio...
Betweenness centrality in Cartesian product of graphsdoi:10.1016/j.akcej.2019.03.012R Sunil KumarKannan BalakrishnanTaylor & Francis
1. In this paper,the Cartesian Product of three topological spaces,compact space,connected space and A2(A1) space,were studied,and three corresponding conclusions are given. 讨论了某些拓扑空间的有限笛卡儿乘积,主要包括紧致空间、连通空间、以及A2(A1)空间。
This is a Phase I dose-escalation study to evaluate the safety, tolerability and preliminary efficacy of an autologous BCMA-targeting RNA-engineered CAR T-cell therapy in patients with Relapsed/Refractory Multiple Myeloma. The cell product is referred to as Descartes-15 ...
In this respect, the generic Cartesian product is a natural extension of such models where the second axis is no longer restricted to represent time only. While our models are broader in scope, for clarity, we will refer to the graphs in the product as ‘time-like’ and ‘space-like’,...
Isometric embedding in products of complete graphs An isometric (i.e., distance-preserving) embedding of a connected graph G into a cartesian product of complete graphs is equivalent to a labelling of each vertex of G by a string of symbols of fixed length such that the distance between .....
证明了一类r-正则r=κ′(G)连通非完全图G的边坚韧度近似等于r/2(1+(1/│V(G)│-1))并且提供了估计一些特殊图类的笛卡儿积和Kronecker积的边坚韧度的公式。 2. Product topology and box topology are two methods for introducing topologies in general Cartesian product,both of them are generalization ...
四、克罗内克积(Kronecker Product) 五、直和(Direct Sum) (前排提醒,建议在电脑上阅读本文,知乎手机App排版太烂了) 物理学中很多地方都会涉及到各种“积”,比如量子力学中二次量子化用到的张量积,角动量耦合理论里涉及的矩阵直积与直和,还有与物理密切相关的张量也与Cartesian积、张量积相关. 但是很多书上对这些...