{"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":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"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\":1,\"journal\":{\"name\":\"Accounts of Chemical Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.4000,\"publicationDate\":\"2024-09-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Accounts of Chemical Research\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://doi.org/10.1186/s13660-024-03193-3\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1186/s13660-024-03193-3","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","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:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
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