亚纯函数族的正规性和微分多项式相关分担值

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本文主要探讨了微分多项式下的正规族和共享值问题,由作者史仲春撰写,发表在《重庆大学数学与物理学学院》。研究聚焦于一个在复平面上的亚纯函数族F,该族中所有零点的重数至少为k(k≥1)。核心假设是对于F中的任意函数f和D中的任意点z,如果满足以下关系: 1. 对于给定的常数a(a≠0)和b,以及一个差分多项式L(z) = ω(z) + Σ(-1)^i*(az^i/b^j),当且仅当f(z) * L(w(z)) = a时,等价于f^(k)(z) = b,其中w(z)是某个函数,且L(z)的最高阶项为m次。 文章的目的是证明,如果上述条件成立,那么函数族F在区域D上是正规的。正规族指的是在一个函数族中,除数有界性保证了整个族中的函数在某一点的行为类似于单个函数,即不存在“异常”行为,如局部极大的簇集或无穷远点的奇异行为。 论文引用了值分布理论的标准符号和术语,其中涉及的主要概念包括: - meromorphic function (解析函数):在复平面上具有有限数量的孤立极点的函数。 - multiplicity (重数):零点或极点的阶数,反映了函数在该点的行为特征。 - differential polynomial (差分多项式):由常数和变量及其导数构成的多项式,用于描述函数之间的关系。 - shared value (共享值):指两个或多个函数在某些点上共同取到的特定值。 - normal family (正规族):函数族在定义域上的稳定性,确保其成员函数在某些性质上的一致行为。 通过这些理论工具,作者旨在揭示微分多项式条件下正规性的判断标准,这在复杂函数分析和数值计算中有重要意义,特别是在研究函数家族的稳定性、逼近性以及动态系统的理论基础方面。这篇首发论文为深入理解函数族的结构和行为提供了新的洞察,并可能启发后续研究者探索更复杂的函数系统。

帮我看看这段话有没有语法错误:The first effect of guaranteeing people have basic financial products and services is increasing the overall quality of people’s lives. Ensuring reliable access to financial products and services can contribute to helping families and companies plan the future from two aspects, long-term goals and unexpected emergencies (The World Bank, 2022). Long-term goals mean long-term investments such as investments in health: saving money against illness, saving for a child’s education, saving for a house or car, etc. Unexpected emergencies mean managing risk, that is, people can apply for a loan from the bank when they are in the face of a sudden bankruptcy or business shock. Furthermore, when people meet weather financial shocks, the government and banks will give some financial assistance. With these financial services, people have a basic guarantee of life and a clear plan for the future in the meanwhile. Guarantee of financial services leads them to save a sum of money in a safe bank account for buying a house, providing funds for children’s education, and buying medical insurance for both themselves and their families to prevent the sudden arrival of diseases. In daily life, online payment improves life efficiency such as reducing queuing time. Additionally, in occupational life, financial guarantees can encourage and empower young people can be bolder to pursue their entrepreneurial dreams by providing them with start-up funds from banks. All in all, the guarantee of financial products leads to individuals plan for their financial futures and improve their overall quality of life.

2023-05-05 上传

Shifts in China’s Rural and Urban Population: 2000-2020 The bar chart clearly reveals that from 2000 to 2020, while the total population in China increased moderately from 1.25 billion to 1.41 billion, population in urban and rural areas experienced dramatic shifts in different directions. Urban population rose from 450 million in 2000 to 670 million in 2010 and 900 million in 2020; contrastingly, rural population declined from 800 million in 2000 to 680 million in 2010 and 510 million in 2020. The population gap narrowed largely because of the joint effects of urbanization, unequal economic opportunities in rural and urban areas, and the expansion of higher education. In the first place, there was a large-scale urban sprawl during this period. Places which had been part of the vast countryside were incorporated into cities, causing hundreds of millions of rural dwellers to be passively transformed into urban residents. What’s more, while urban living standards improved greatly in these years, few economic opportunities fell on rural areas and most peasant families remained at the poverty line. Poverty prompted the call for change, leading a large quantity of healthy young peasants to leave their hometowns and flock to cities for a better living. Last but not least, China’s higher education grew at an unprecedented rate in these years. More high school graduates than ever before entered colleges and universities, most of whom preferred to stay in urban areas after graduation for personal development. The increase in urban population was a sure indication of economic and educational achievements in China. It benefited the country in many aspects, relieving the shortage of labor force in cities, lessening the burden of peasants to support their families, and affording young people from rural areas more opportunities to display their talents. However, the migration of rural residents into urban areas inevitably brought about disadvantages. Some of them, such as waste of arable land and left-behind children in the countryside, as well as traffic congestion and soaring housing prices in cities, have already called the attention of the government and corresponding measures have begun to take effect. But others, especially the inability of many peasants to integrate into urban life due to their lack of education and civilized habits, have long been neglected. In this sense, we cannot be satisfied with the superficially optimistic figures in the chart, but should endeavor to foster the integration of these newcomers by providing them with adequate assistance in educational and cultural aspects, so that they can find easier access to the prosperity and convenience of urban life and be more fully devoted to the development of cities.翻译成英文版两百单词左右的文章

2023-02-21 上传