The primary objective of this paper is to establish several sharp versions of improved Bohr inequality,refined Bohr-type inequality,and refined Bohr-Rogosinski inequality for the class of K-quasiconformal sense-preser...The primary objective of this paper is to establish several sharp versions of improved Bohr inequality,refined Bohr-type inequality,and refined Bohr-Rogosinski inequality for the class of K-quasiconformal sense-preserving harmonic mappings f=h+g in the unit disk D:={z∈C:|z|<1}.In order to achieve these objectives,we employ the non-negative quantity Sρ(h) and the concept of replacing the initial coefficients of the majorant series by the absolute values of the analytic function and its derivative,as well as other various settings.Moreover,we obtain the sharp Bohr-Rogosinski radius for harmonic mappings in the unit disk by replacing the bounding condition on the analytic function h with the half-plane condition.展开更多
In this paper,we first establish refined versions of the Bohr inequalities for the class of holomorphic functions from the unit ball BX of a complex Banach space X into ℂ.As applications,we will establish refined Bohr...In this paper,we first establish refined versions of the Bohr inequalities for the class of holomorphic functions from the unit ball BX of a complex Banach space X into ℂ.As applications,we will establish refined Bohr inequalities of functional type or of norm type for holomorphic mappings with lacunary series on the unit ball BX with values in higher dimensional spaces.Next,we obtain the Bohr-Rogosinski inequality for the class of holomorphic functions on BX.In addition,we establish an improved version of the Bohr inequality for holomorphic functions on BX.All the results are proved to be sharp.展开更多
X-ray emission from the collisions of 3 MeV Ar11+ions with V,Fe,Co,Ni,Cu,and Zn is investigated.Both the x-rays of the target atom and projectile are observed simultaneously.The x-ray yield is extracted from the or...X-ray emission from the collisions of 3 MeV Ar11+ions with V,Fe,Co,Ni,Cu,and Zn is investigated.Both the x-rays of the target atom and projectile are observed simultaneously.The x-ray yield is extracted from the original count.The inner-shell ionization cross section is estimated by the binary encounter approximation model and compared with the experimental result.The remarkable result is that the Ar K-shell x-ray yield is diminished with the target atomic number increasing,which is completely opposite to the theoretical calculation.That is interpreted by the competitive consumption of the energy loss for the ionization of inner-shell electrons between the projectile and target atom.展开更多
Bohr's type inequalities are studied in this paper: if f is a holomorphic mapping from the unit ball B^n to B^n, f(0)=p, then we have sum from k=0 to∞|Dφ_P(P)[D^kf(0)(z^k)]|/k!||Dφ_P(P)||<1 for|z|<max{1/2+|...Bohr's type inequalities are studied in this paper: if f is a holomorphic mapping from the unit ball B^n to B^n, f(0)=p, then we have sum from k=0 to∞|Dφ_P(P)[D^kf(0)(z^k)]|/k!||Dφ_P(P)||<1 for|z|<max{1/2+|P|,(1-|p|)/21/2andφ_P∈Aut(B^n) such thatφp=0. As corollaries of the above estimate, we obtain some sharp Bohr's type modulus inequalities. In particular, when n=1 and |P|→1, then our theorem reduces to a classical result of Bohr.展开更多
Bohr assumed a quantum condition when deriving the energy levels of a hydrogen atom. This famous quantum condition was not derived logically, but it beautifully explained the energy levels of the hydrogen atom. Theref...Bohr assumed a quantum condition when deriving the energy levels of a hydrogen atom. This famous quantum condition was not derived logically, but it beautifully explained the energy levels of the hydrogen atom. Therefore, Bohr’s quantum condition was accepted by physicists. However, the energy levels predicted by the eventually completed quantum mechanics do not match perfectly with the predictions of Bohr. For this reason, it cannot be said that Bohr’s quantum condition is a perfectly correct assumption. Since the mass of an electron which moves inside a hydrogen atom varies, Bohr’s quantum condition must be revised. However, the newly derived relativistic quantum condition is too complex to be assumed at the beginning. The velocity of an electron in a hydrogen atom is known as the Bohr velocity. This velocity can be derived from the formula for energy levels derived by Bohr. The velocity v of an electron including the principal quantum number n is given by αc. This paper elucidates the fact that this formula is built into Bohr’s quantum condition. It is also concluded in this paper that it is precisely this velocity formula that is the quantum condition that should have been assumed in the first place by Bohr. From Bohr’s quantum condition, it is impossible to derive the relativistic energy levels of a hydrogen atom, but they can be derived from the new quantum condition. This paper proposes raising the status of the previously-known Bohr velocity formula.展开更多
The purpose of this paper is twofold.First,by using the hyperbolic metric,we establish the Bohr radius for analytic functions from shifted disks containing the unit disk D into convex proper domains of the complex pla...The purpose of this paper is twofold.First,by using the hyperbolic metric,we establish the Bohr radius for analytic functions from shifted disks containing the unit disk D into convex proper domains of the complex plane.As a consequence,we generalize the Bohr radius of Evdoridis,Ponnusamy and Rasila based on geometric idea.By introducing an alternative multidimensional Bohr radius,the second purpose is to obtain the Bohr radius of higher dimensions for Carathéodory families in the unit ball B of a complex Banach space X.Notice that when B is the unit ball of the complex Hilbert space X,we show that the constant 1/3 is the Bohr radius for normalized convex mappings of B,which generalizes the result of convex functions on D.展开更多
An absolute value equation is established for linear combinations of two operators.When the parameters take special values, the parallelogram law of operator type is given. In addition, the operator equation in litera...An absolute value equation is established for linear combinations of two operators.When the parameters take special values, the parallelogram law of operator type is given. In addition, the operator equation in literature [3] and its equivalent deformation are obtained.Based on the equivalent deformation of the operator equation and using the properties of conjugate number as well as the operator, an absolute value identity of multiple operators is given by means of mathematical induction. As Corollaries, Bohr inequalities are extended to multiple operators and some related inequalities are reduced to, such as inequalities in [2]and [3].展开更多
基金supported by University Grants Commission(IN)fellowship(F.44-1/2018(SA-III)).
摘要The primary objective of this paper is to establish several sharp versions of improved Bohr inequality,refined Bohr-type inequality,and refined Bohr-Rogosinski inequality for the class of K-quasiconformal sense-preserving harmonic mappings f=h+g in the unit disk D:={z∈C:|z|<1}.In order to achieve these objectives,we employ the non-negative quantity Sρ(h) and the concept of replacing the initial coefficients of the majorant series by the absolute values of the analytic function and its derivative,as well as other various settings.Moreover,we obtain the sharp Bohr-Rogosinski radius for harmonic mappings in the unit disk by replacing the bounding condition on the analytic function h with the half-plane condition.
基金supported by the SERB,SUR/2022/002244,Govt.India and the second author was supported by the UGC-JRF(NTA Ref.No.:201610135853)New Delhi,India,and the third author was partially supported by the JSPS KAKENHI(JP22K03363).
摘要In this paper,we first establish refined versions of the Bohr inequalities for the class of holomorphic functions from the unit ball BX of a complex Banach space X into ℂ.As applications,we will establish refined Bohr inequalities of functional type or of norm type for holomorphic mappings with lacunary series on the unit ball BX with values in higher dimensional spaces.Next,we obtain the Bohr-Rogosinski inequality for the class of holomorphic functions on BX.In addition,we establish an improved version of the Bohr inequality for holomorphic functions on BX.All the results are proved to be sharp.
基金Project supported by the National Key R&D Program of China(Grant No.2017YFA0402300)the National Natural Science Foundation of China(Grant Nos.11505248,11775042,11875096,and 11605147)the Scientific Research Program Funded by Shaanxi Provincial Education Department,China(Grant No.20JK0975)+2 种基金the Scientific Research Plan of Science and Technology Department of Shaanxi Province,China(Grant Nos.2021JQ-812 and 2020JM-624)Open Funds of MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions(Grant No.MPCEC201901)Xianyang Normal University Science Foundation(Grant Nos.XSYK20009 and XSYK20024).
摘要X-ray emission from the collisions of 3 MeV Ar11+ions with V,Fe,Co,Ni,Cu,and Zn is investigated.Both the x-rays of the target atom and projectile are observed simultaneously.The x-ray yield is extracted from the original count.The inner-shell ionization cross section is estimated by the binary encounter approximation model and compared with the experimental result.The remarkable result is that the Ar K-shell x-ray yield is diminished with the target atomic number increasing,which is completely opposite to the theoretical calculation.That is interpreted by the competitive consumption of the energy loss for the ionization of inner-shell electrons between the projectile and target atom.
基金Supported by the NNSF of China(10571164)Supported by Specialized Research Fund for the Doctoral Program of Higher Education(SRFDP)(2050358052)Supported by the NSF of Zhejiang Province(Y606197)
摘要Bohr's type inequalities are studied in this paper: if f is a holomorphic mapping from the unit ball B^n to B^n, f(0)=p, then we have sum from k=0 to∞|Dφ_P(P)[D^kf(0)(z^k)]|/k!||Dφ_P(P)||<1 for|z|<max{1/2+|P|,(1-|p|)/21/2andφ_P∈Aut(B^n) such thatφp=0. As corollaries of the above estimate, we obtain some sharp Bohr's type modulus inequalities. In particular, when n=1 and |P|→1, then our theorem reduces to a classical result of Bohr.
摘要Bohr assumed a quantum condition when deriving the energy levels of a hydrogen atom. This famous quantum condition was not derived logically, but it beautifully explained the energy levels of the hydrogen atom. Therefore, Bohr’s quantum condition was accepted by physicists. However, the energy levels predicted by the eventually completed quantum mechanics do not match perfectly with the predictions of Bohr. For this reason, it cannot be said that Bohr’s quantum condition is a perfectly correct assumption. Since the mass of an electron which moves inside a hydrogen atom varies, Bohr’s quantum condition must be revised. However, the newly derived relativistic quantum condition is too complex to be assumed at the beginning. The velocity of an electron in a hydrogen atom is known as the Bohr velocity. This velocity can be derived from the formula for energy levels derived by Bohr. The velocity v of an electron including the principal quantum number n is given by αc. This paper elucidates the fact that this formula is built into Bohr’s quantum condition. It is also concluded in this paper that it is precisely this velocity formula that is the quantum condition that should have been assumed in the first place by Bohr. From Bohr’s quantum condition, it is impossible to derive the relativistic energy levels of a hydrogen atom, but they can be derived from the new quantum condition. This paper proposes raising the status of the previously-known Bohr velocity formula.
基金supported by the National Natural Science Foundation of China(12071161,11971165&11671362)the Natural Science Foundation of Fujian Province(2020J01073)。
摘要The purpose of this paper is twofold.First,by using the hyperbolic metric,we establish the Bohr radius for analytic functions from shifted disks containing the unit disk D into convex proper domains of the complex plane.As a consequence,we generalize the Bohr radius of Evdoridis,Ponnusamy and Rasila based on geometric idea.By introducing an alternative multidimensional Bohr radius,the second purpose is to obtain the Bohr radius of higher dimensions for Carathéodory families in the unit ball B of a complex Banach space X.Notice that when B is the unit ball of the complex Hilbert space X,we show that the constant 1/3 is the Bohr radius for normalized convex mappings of B,which generalizes the result of convex functions on D.
基金Supported by the Key Scientific and Technological Innovation Team Project in Shaanxi Province(2014KCT-15)
摘要An absolute value equation is established for linear combinations of two operators.When the parameters take special values, the parallelogram law of operator type is given. In addition, the operator equation in literature [3] and its equivalent deformation are obtained.Based on the equivalent deformation of the operator equation and using the properties of conjugate number as well as the operator, an absolute value identity of multiple operators is given by means of mathematical induction. As Corollaries, Bohr inequalities are extended to multiple operators and some related inequalities are reduced to, such as inequalities in [2]and [3].