简单的说,构造好这样的图后,我们想要给每个三角形赋值, 每条边是 冲突的,例如我们选择第一个三角形的y为真值后,与y相连的各个顶点将不能被选择。 加入了3m个点,3m+k条边所以是多项式的时间内完成的规约。 2.Vertex Cover <=Independent Set 9. Independent Set <= Clique problem 3. 证明一...
It is an analogue of the celebrated crown decomposition which has been used for Vertex Cover. We develop the graph structure theory around such decompositions and develop fixed-parameter tractable algorithms to find them, parameterized by the number of vertices for which they witness presence in an...
A computed tomog- raphy (CT) scan with and without intravenous (IV) con- trast for treatment planning was performed in the treatment position. The head and neck areas from the vertex to the mid thorax were scanned with a slice thick- ness of 3 mm. CT scan with IV contrast was ...
to transform said vertices into a different coordinate frame, wherein said transforming produces transformed vertices; a transformed vertex memory configured to store the transformed vertices; and a set up unit configured to assemble geometric primitives from said transformed vertices, wherein said set ...
A computed tomog- raphy (CT) scan with and without intravenous (IV) con- trast for treatment planning was performed in the treatment position. The head and neck areas from the vertex to the mid thorax were scanned with a slice thick- ness of 3 mm. CT scan with IV contrast was ...
Prior to the experiment and after deafening, auditory brainstem responses (ABR) to click stimuli were recorded from both ears using three transcutaneous silver wire electrodes placed on the top of the skull above the vertex, behind the bulla, and a ground electrode in the scruff. Condensation cli...
Using FIG. 10 through FIG. 23, a first embodiment of the invention is described. In FIG. 10, an optical unit 61 is arranged so as to cover the front of the aforesaid projection and collection lenses 9 and 11 and comprises a glass block portion of plate-like shape and a prism portion...
A. A. Benczu´r, "Pushdown-reduce: an algorithm for connectivity augmentation and poset cover- ing problems", In Discrete Applied Mathematics, 129(2-3):233-262, Aug. 2003Andr´as A. Benczu´r, Pushdown-Reduce: An algorithm for connectivity augmentation and poset covering problems. ...