{"title":"On the Additive Complexity of Some Integer Sequences","authors":"I. S. Sergeev","doi":"10.1134/s0001434624030106","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p> The paper presents several results concerning the complexity of calculations in the model of vector addition chains. A refinement of N. Pippenger’s upper bound is obtained for the complexity of the class of integer <span>\\(m \\times n\\)</span> matrices with the constraint <span>\\(q\\)</span> on the size of the coefficients as <span>\\(H=mn\\log_2 q \\to \\infty\\)</span> up to <span>\\(\\min\\{m,n\\}\\log_2 q+(1+o(1))H/\\log_2 H+n\\)</span>. Next, we establish an asymptotically tight bound <span>\\((2+o(1))\\sqrt n\\)</span> on the complexity of сomputation of the number <span>\\(2^n-1\\)</span> in the base of powers of <span>\\(2\\)</span>. Based on generalized Sidon sequences, constructive examples of integer sets of cardinality <span>\\(n\\)</span> are constructed: sets, with polynomial size of elements, having the complexity <span>\\(n+\\Omega(n^{1-\\varepsilon})\\)</span> for any <span>\\(\\varepsilon>0\\)</span> and sets, with the size <span>\\(n^{O(\\log n)}\\)</span> of the elements, having the complexity <span>\\(n+\\Omega(n)\\)</span>. </p>","PeriodicalId":18294,"journal":{"name":"Mathematical Notes","volume":"19 1","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mathematical Notes","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1134/s0001434624030106","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
The paper presents several results concerning the complexity of calculations in the model of vector addition chains. A refinement of N. Pippenger’s upper bound is obtained for the complexity of the class of integer \(m \times n\) matrices with the constraint \(q\) on the size of the coefficients as \(H=mn\log_2 q \to \infty\) up to \(\min\{m,n\}\log_2 q+(1+o(1))H/\log_2 H+n\). Next, we establish an asymptotically tight bound \((2+o(1))\sqrt n\) on the complexity of сomputation of the number \(2^n-1\) in the base of powers of \(2\). Based on generalized Sidon sequences, constructive examples of integer sets of cardinality \(n\) are constructed: sets, with polynomial size of elements, having the complexity \(n+\Omega(n^{1-\varepsilon})\) for any \(\varepsilon>0\) and sets, with the size \(n^{O(\log n)}\) of the elements, having the complexity \(n+\Omega(n)\).
期刊介绍:
Mathematical Notes is a journal that publishes research papers and review articles in modern algebra, geometry and number theory, functional analysis, logic, set and measure theory, topology, probability and stochastics, differential and noncommutative geometry, operator and group theory, asymptotic and approximation methods, mathematical finance, linear and nonlinear equations, ergodic and spectral theory, operator algebras, and other related theoretical fields. It also presents rigorous results in mathematical physics.