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1.
毛一波 《渝西学院学报(自然科学版)》2006,(4)
对比数项级数和函数项级数,给出了与数项级数收敛性判别法类似的函数项级数一致收敛性判别法,即比式判别法、根式判别法,同时还给出了函数项级数一致收敛性的对数判别法. 相似文献
2.
复Fuzzy函数级数的一致收敛及其若干性质 总被引:1,自引:0,他引:1
彭维玲 《贵州师范大学学报(自然科学版)》2004,22(2):58-61
在给出复Fuzzy函数级数及其一致收敛的概念的基础上,补充了复Fuzzy函数级数一致收敛的判别方法并讨论了一致收敛的复Fuzzy函数级数的若干性质。 相似文献
3.
关于函数项级数一致收敛性判定的讨论 总被引:1,自引:0,他引:1
利用数列对函数项级数定义进行推广,对比数项级数和函数项级数及判别法,给出了类似数项级数的函数项级数一致收敛判别法--比式判别法和根式判别法,同时举例验证判别法的有效性. 相似文献
4.
函数项级数一致收敛性的判定 总被引:4,自引:0,他引:4
毛一波 《重庆文理学院学报(自然科学版)》2006,5(4):55-56
对比数项级数和函数项级数,给出了与数项级数收敛性判别法类似的函数项级数一致收敛性判别法,即比式判别法、根式判别法,同时还给出了函数项级数一致收敛性的对数判别法. 相似文献
5.
《哈尔滨商业大学学报(自然科学版)》2017,(2)
研究了模糊数项级数的敛散性质以及模糊数代数运算的计算公式.并且得到模糊数项级数左右函数的逐点收敛等价于一致收敛,即模糊数项级数和函数列的左右函数列构成的级数逐点收敛等价于模糊数项级数收敛. 相似文献
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梁应仙 《沈阳大学学报:自然科学版》2004,16(2):101-102
将函数应用于无穷级数之中.欲求一个无穷级数的和,构造一个辅助幂级数,先求出这个幂级数的和函数,再将其结论应用于原问题之中,求出常数项无穷级数的和,从而给出了一个利用函数及其幂级数计算常数项级数之和的方法. 相似文献
8.
朱双荣 《高等函授学报(自然科学版)》2010,23(2):46-47,50
借助于已知级数的和函数,通过观察或逐项求导、逐项积分等方法得到需要求出和函数的级数所满足的式子,从而求出级数的和函数。 相似文献
9.
在数值级数的收敛判别法中,正项级数的积分判别法解决了一类正项级数与无穷积分的收敛判别问题,在此基础上,本文进一步研究函数项级数一致收敛的积分判别法,并以此解决一类函数项级数与含参变量无穷积分的一致收敛判别问题。 相似文献
10.
Fuzzy区间值函数项级数及其一致收敛性 总被引:2,自引:0,他引:2
郭志林 《广西右江民族师专学报》2005,18(6):9-12
文章在已知Fuzzy函数项级数一致收敛概念的基础上,补充了区间值函数项级数一致收敛的概念和判别方法,给出了一致收敛性的区间值函数项级数的分析性质。 相似文献
11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness. 相似文献
12.
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly. 相似文献
13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。 相似文献
14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death. 相似文献
15.
Miao Maosheng 《华南师范大学学报(自然科学版)》2014,(6)
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula- 相似文献
16.
Yang Weitao 《华南师范大学学报(自然科学版)》2014,46(6):137-138
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re- 相似文献
17.
Bernard Kirtman 《华南师范大学学报(自然科学版)》2014,(6)
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that 相似文献
18.
《上海师范大学学报(自然科学版)》2014,(5):550
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with 相似文献
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《吉林大学学报(理学版)》2014,(5):1105
<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has 相似文献