On the Gracefulness of Graph (jC4n) U Pm

来源 :数学研究通讯 | 被引量 : 0次 | 上传用户:zhangfegnlin
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The present paper deals with the gracefulness of unconnected graph (jC4n) U Pn, and proves the following result: for positive integers n, j and m with n ≥ 1, j ≥ 2, the unconnected graph (jC4n) U Pm is a graceful graph for m = j - 1or m ≥ n + j, where C4n is a cycle with 4n vertexes, -Pm is a path with m + 1vertexes, and (jC4n) U Pm denotes the disjoint union of j - C4n and Pm.
其他文献
循证实践是近年来兴起的涉及多个学科的方法学研究思路之一,高中物理教学思路和策略亟待拓展与改革,在这一过程中引入循证实践原则是行之有效的途径。 Evidence-based pract
This paper considers the estimation problem of a variance change-point in linear process. Consistency of a SCUSUM type change-point estimator is proved and its
在碱性过硫酸钾消解-紫外分光光度法测定水体总氮过程中,碘离子和溴离子的存在会对测定结果产生干扰.针对这一现象,提出采用BP神经网络建立NO-3、I-、Br-含量的预测模型,经过
以无水四硼酸锉和碳酸锂作熔剂,采用玻璃熔片法制样,建立了测定铝硅锆质耐火材料中Al2O3,SiO2,Fe203,TiO2,CaO,MgO,ZrO2,HfO2等组分的X射线荧光光谱法(XRF).根据铝硅锆质耐火
For maximal multilinear Calderón-Zygmund singular integral operators, the sharp maximal function estimate and some weighted norm inequalities are obtained.
We have developed a path integral formalism of the quantum mechanics in the rotating frame of reference, and proposed a path integral description of spin degree
Time-domain state-domain methods are common approaches in modern financial analysis. Economic conditions vary time, drift function depends on time and price lev
用PW91P86/LanL2DZ方法,系统研究了锌掺杂金团簇AunZn(n=1-8)可能的稳定结构和最低能量异构体的相对稳定性.计算结果表明:AunZn(n=1-8)团簇的基态几何结构为平面结构,含奇数个
用溶胶-凝胶法和微波法相结合制备了碳包裹的LiFePO4/C材料.XRD、SEM和电化学测试表明:真空干燥下微波18min所得样品为橄榄石型非晶结构,粒径在30~100nm,0.2C充放电的首次放电
用HPLC法测定了氢化可的松戊酸酯有关物质,结果表明,氢化可的松戊酸酯与氢化可的松及氢化可的松-21-戊酸酯分离良好,氢化可的松戊酸酯与氢化可的松及氢化可的松-21-戊酸酯的