{"title":"扇出界并行前缀电路的复杂度","authors":"I. S. Sergeev","doi":"10.1134/S1990478924040185","DOIUrl":null,"url":null,"abstract":"<p> We prove that the complexity of a universal depth-\n<span>\\( n \\)</span> parallel prefix circuit on\n<span>\\( 2^n \\)</span> inputs with fanout bounded by\n<span>\\( 2 \\)</span> is at least\n<span>\\( 0.75(n-1)2^{n} \\)</span>. We also propose a number of simple constructions and upper complexity\nbounds on fanout-\n<span>\\( 2 \\)</span> prefix circuits of depth\n<span>\\( n+k \\)</span>.\n</p>","PeriodicalId":607,"journal":{"name":"Journal of Applied and Industrial Mathematics","volume":"18 4","pages":"850 - 859"},"PeriodicalIF":0.5800,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"On the Complexity of Fanout-Bounded Parallel\\nPrefix Circuits\",\"authors\":\"I. S. Sergeev\",\"doi\":\"10.1134/S1990478924040185\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p> We prove that the complexity of a universal depth-\\n<span>\\\\( n \\\\)</span> parallel prefix circuit on\\n<span>\\\\( 2^n \\\\)</span> inputs with fanout bounded by\\n<span>\\\\( 2 \\\\)</span> is at least\\n<span>\\\\( 0.75(n-1)2^{n} \\\\)</span>. We also propose a number of simple constructions and upper complexity\\nbounds on fanout-\\n<span>\\\\( 2 \\\\)</span> prefix circuits of depth\\n<span>\\\\( n+k \\\\)</span>.\\n</p>\",\"PeriodicalId\":607,\"journal\":{\"name\":\"Journal of Applied and Industrial Mathematics\",\"volume\":\"18 4\",\"pages\":\"850 - 859\"},\"PeriodicalIF\":0.5800,\"publicationDate\":\"2025-07-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Applied and Industrial Mathematics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1990478924040185\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"Engineering\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied and Industrial Mathematics","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1990478924040185","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
On the Complexity of Fanout-Bounded Parallel
Prefix Circuits
We prove that the complexity of a universal depth-
\( n \) parallel prefix circuit on
\( 2^n \) inputs with fanout bounded by
\( 2 \) is at least
\( 0.75(n-1)2^{n} \). We also propose a number of simple constructions and upper complexity
bounds on fanout-
\( 2 \) prefix circuits of depth
\( n+k \).
期刊介绍:
Journal of Applied and Industrial Mathematics is a journal that publishes original and review articles containing theoretical results and those of interest for applications in various branches of industry. The journal topics include the qualitative theory of differential equations in application to mechanics, physics, chemistry, biology, technical and natural processes; mathematical modeling in mechanics, physics, engineering, chemistry, biology, ecology, medicine, etc.; control theory; discrete optimization; discrete structures and extremum problems; combinatorics; control and reliability of discrete circuits; mathematical programming; mathematical models and methods for making optimal decisions; models of theory of scheduling, location and replacement of equipment; modeling the control processes; development and analysis of algorithms; synthesis and complexity of control systems; automata theory; graph theory; game theory and its applications; coding theory; scheduling theory; and theory of circuits.