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例谈求递推数列通项公式的代换法
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作者 王永 《数学教学研究》 1998年第1期31-32,共2页
例谈求递推数列通项公式的代换法王永(天津市武清县杨村一中301700)在求递推数列通项公式的多种方法中,代换法占有十分重要的地位,应用它可使一些繁难的题目变得简便易解.本文对中学阶段的几种常用代换法作一简单介绍,以供... 例谈求递推数列通项公式的代换法王永(天津市武清县杨村一中301700)在求递推数列通项公式的多种方法中,代换法占有十分重要的地位,应用它可使一些繁难的题目变得简便易解.本文对中学阶段的几种常用代换法作一简单介绍,以供读者参考.一、线性代换法例1已知数... 展开更多
关键词 通项公式 递推数列 三角代换 递推式 等比数列 例谈 已知数 表达式 对数代换 线性代换
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高职高专《医用高等数学》第二换元积分法教学点滴体会
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作者 吕兴汉 信伟华 《数理医药学杂志》 2015年第12期1884-1886,共3页
针对高职高专层次教学要求,总结阐述第二换元法常见题目类型,进行相应的变量代换,将被积函数恒等变形,进而求解不定积分,并通过例题加以展示。
关键词 第二换元法 根式代换 三角代换 代换 指数代换 对数代换 反三角代换
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Lie Point Symmetry Algebras and Finite Transformation Groups of Baroclinic Mode for Rotating Stratified Flows
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作者 元青青 楼森岳 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第5期878-882,共5页
The transformation groups and symmetries of the baroclinic mode for rotating stratified flow can be obtained via the standard approach. Applying the symmetry group on some special solutions, the newly obtained results... The transformation groups and symmetries of the baroclinic mode for rotating stratified flow can be obtained via the standard approach. Applying the symmetry group on some special solutions, the newly obtained results disprove a known conjecture. 展开更多
关键词 rotating stratified flows SYMMETRIES nonequivalent barotropic exact solutions
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Analytic Toeplitz algebras and the Hilbert transform associated with a subdiagonal algebra 被引量:2
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作者 JI GuoXing 《Science China Mathematics》 SCIE 2014年第3期579-588,共10页
Let M be a a-finite yon Neumann algebra and let 9i C M be a maximal subdiagonal algebra with respect to a faithful normal conditional expectation Ф. Based on the Haagerup's noncommutative Lp space LP(M) associated... Let M be a a-finite yon Neumann algebra and let 9i C M be a maximal subdiagonal algebra with respect to a faithful normal conditional expectation Ф. Based on the Haagerup's noncommutative Lp space LP(M) associated with M, we consider Toeplitz operators and the Hilbert transform associated with 8i. We prove that the commutant of left analytic Toeplitz algebra on noncommutative Hardy space H2(A4) is just the right analytic Toeplitz algebra. Furthermore, the Hilbert transform on noncommutative LP(Yt4) is shown to be bounded for 1 ( p ( ce. As an application, we consider a noncomnmtative analog of the space BMO and identify the dual space of noncommutative Hl(M) as a concrete space of operators. 展开更多
关键词 von Neumann algebra subdiagonal algebra noncommutative Hp space Toeplitz operator Hilbert transform
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