{"title":"通过递增函数的矩阵奇异值不等式","authors":"Wasim Audeh, Anwar Al-Boustanji, Manal Al-Labadi, Raja’a Al-Naimi","doi":"10.1186/s13660-024-03193-3","DOIUrl":null,"url":null,"abstract":"Let A, B, X, and Y be $n\\times n$ complex matrices such that A is self-adjoint, $B\\geq 0$ , $\\pm A\\leq B$ , $\\max ( \\Vert X \\Vert ^{2}, \\Vert Y \\Vert ^{2} ) \\leq 1$ , and let f be a nonnegative increasing convex function on $[ 0,\\infty ) $ satisfying $f(0)=0$ . Then $$ 2s_{j}\\bigl(f \\bigl( \\bigl\\vert XAY^{\\ast } \\bigr\\vert \\bigr) \\bigr)\\leq \\max \\bigl\\{ \\Vert X \\Vert ^{2}, \\Vert Y \\Vert ^{2} \\bigr\\} s_{j}\\bigl(f(B+A)\\oplus f(B-A)\\bigr) $$ for $j=1,2,\\ldots,n$ . This singular value inequality extends an inequality of Audeh and Kittaneh. Several generalizations for singular value and norm inequalities of matrices are also given.","PeriodicalId":16088,"journal":{"name":"Journal of Inequalities and Applications","volume":"48 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Singular value inequalities of matrices via increasing functions\",\"authors\":\"Wasim Audeh, Anwar Al-Boustanji, Manal Al-Labadi, Raja’a Al-Naimi\",\"doi\":\"10.1186/s13660-024-03193-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Let A, B, X, and Y be $n\\\\times n$ complex matrices such that A is self-adjoint, $B\\\\geq 0$ , $\\\\pm A\\\\leq B$ , $\\\\max ( \\\\Vert X \\\\Vert ^{2}, \\\\Vert Y \\\\Vert ^{2} ) \\\\leq 1$ , and let f be a nonnegative increasing convex function on $[ 0,\\\\infty ) $ satisfying $f(0)=0$ . Then $$ 2s_{j}\\\\bigl(f \\\\bigl( \\\\bigl\\\\vert XAY^{\\\\ast } \\\\bigr\\\\vert \\\\bigr) \\\\bigr)\\\\leq \\\\max \\\\bigl\\\\{ \\\\Vert X \\\\Vert ^{2}, \\\\Vert Y \\\\Vert ^{2} \\\\bigr\\\\} s_{j}\\\\bigl(f(B+A)\\\\oplus f(B-A)\\\\bigr) $$ for $j=1,2,\\\\ldots,n$ . This singular value inequality extends an inequality of Audeh and Kittaneh. Several generalizations for singular value and norm inequalities of matrices are also given.\",\"PeriodicalId\":16088,\"journal\":{\"name\":\"Journal of Inequalities and Applications\",\"volume\":\"48 1\",\"pages\":\"\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-09-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Inequalities and Applications\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://doi.org/10.1186/s13660-024-03193-3\",\"RegionNum\":3,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Inequalities and Applications","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1186/s13660-024-03193-3","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
摘要
让 A, B, X 和 Y 是 $n\times n$ 复数矩阵,使得 A 是自相关的,$B\geq 0$ , $pm A\leq B$ , $\max ( \Vert X \Vert ^{2}, \Vert Y \Vert ^{2} ) \leq 1$ , 并让 f 是一个在 $[ 0,\infty ) $ 上满足 $f(0)=0$ 的非负递增凸函数。Then $$ 2s_{j}\bigl(f \bigl\vert XAY^{\ast } \bigr\vert \bigr) \bigr)\leq \max \bigl\{ \Vert X \Vert ^{2}, \Vert Y \Vert ^{2}.\s_{j}\bigl(f(B+A)\oplus f(B-A)\bigr) $$ for $j=1,2,\ldots,n$ 。这个奇异值不等式扩展了 Audeh 和 Kittaneh 的不等式。此外,还给出了矩阵奇异值不等式和规范不等式的几种一般化。
Singular value inequalities of matrices via increasing functions
Let A, B, X, and Y be $n\times n$ complex matrices such that A is self-adjoint, $B\geq 0$ , $\pm A\leq B$ , $\max ( \Vert X \Vert ^{2}, \Vert Y \Vert ^{2} ) \leq 1$ , and let f be a nonnegative increasing convex function on $[ 0,\infty ) $ satisfying $f(0)=0$ . Then $$ 2s_{j}\bigl(f \bigl( \bigl\vert XAY^{\ast } \bigr\vert \bigr) \bigr)\leq \max \bigl\{ \Vert X \Vert ^{2}, \Vert Y \Vert ^{2} \bigr\} s_{j}\bigl(f(B+A)\oplus f(B-A)\bigr) $$ for $j=1,2,\ldots,n$ . This singular value inequality extends an inequality of Audeh and Kittaneh. Several generalizations for singular value and norm inequalities of matrices are also given.
期刊介绍:
The aim of this journal is to provide a multi-disciplinary forum of discussion in mathematics and its applications in which the essentiality of inequalities is highlighted. This Journal accepts high quality articles containing original research results and survey articles of exceptional merit. Subject matters should be strongly related to inequalities, such as, but not restricted to, the following: inequalities in analysis, inequalities in approximation theory, inequalities in combinatorics, inequalities in economics, inequalities in geometry, inequalities in mechanics, inequalities in optimization, inequalities in stochastic analysis and applications.