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Stronger forms of sensitivity on product dynamical system via Furstenberg families 通过Furstenberg族对产品动力系统的更强的敏感性
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-12-01 DOI: 10.1556/012.2019.56.4.1446
Rahul Thakur, Ruchi Das
{"title":"Stronger forms of sensitivity on product dynamical system via Furstenberg families","authors":"Rahul Thakur, Ruchi Das","doi":"10.1556/012.2019.56.4.1446","DOIUrl":"https://doi.org/10.1556/012.2019.56.4.1446","url":null,"abstract":"Abstract In this paper, it has been investigated that how various stronger notions of sensitivity like 𝓕-sensitive, multi-𝓕-sensitive, (𝓕1, 𝓕2)-sensitive, etc., where 𝓕, 𝓕1, 𝓕2 are Furstenberg fami...","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76275126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Domain representable Lindelöf spaces are cofinally Polish 领域可表示Lindelöf空间是cofinally Polish
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-12-01 DOI: 10.1556/012.2019.56.4.1442
V. Tkachuk
{"title":"Domain representable Lindelöf spaces are cofinally Polish","authors":"V. Tkachuk","doi":"10.1556/012.2019.56.4.1442","DOIUrl":"https://doi.org/10.1556/012.2019.56.4.1442","url":null,"abstract":"We prove that, for any cofinally Polish spaceX, every locally finite family of non-empty open subsets ofXis countable. It is also established that Lindelöf domain representable spaces are cofinally Polish and domain representability coincides with subcompactness in the class ofσ-compact spaces. It turns out that, for a topological groupGwhose space has the Lindelöf Σ-property, the spaceGis domain representable if and only if it is Čech-complete. Our results solve several published open questions.","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90446560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Construction of Cohen-Macaulay Graphs Cohen-Macaulay图的构造
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-12-01 DOI: 10.1556/012.2019.56.4.1437
Safyan Ahmad, S. Kanwal
{"title":"A Construction of Cohen-Macaulay Graphs","authors":"Safyan Ahmad, S. Kanwal","doi":"10.1556/012.2019.56.4.1437","DOIUrl":"https://doi.org/10.1556/012.2019.56.4.1437","url":null,"abstract":"Abstract We present a technique to construct Cohen–Macaulay graphs from a given graph; if this graph fulfills certain conditions. As a consequence, we characterize Cohen–Macaulay paths.","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74022364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Lemniscate convexity of generalized Bessel functions 广义贝塞尔函数的lemniscal凸性
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-12-01 DOI: 10.1556/012.2019.56.4.1445
V. Madaan, Ajay Kumar, V. Ravichandran
{"title":"Lemniscate convexity of generalized Bessel functions","authors":"V. Madaan, Ajay Kumar, V. Ravichandran","doi":"10.1556/012.2019.56.4.1445","DOIUrl":"https://doi.org/10.1556/012.2019.56.4.1445","url":null,"abstract":"Abstract Sufficient conditions on associated parameters p, b and c are obtained so that the generalized and “normalized” Bessel function up(z) = up,b,c(z) satisfies the inequalities ∣(1 + (zu″p(z)/...","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83689256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Perfect Pell and Pell–Lucas numbers 完美的佩尔和佩尔-卢卡斯数字
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-12-01 DOI: 10.1556/012.2019.56.4.1440
Jhon J. Bravo, F. Luca
{"title":"Perfect Pell and Pell–Lucas numbers","authors":"Jhon J. Bravo, F. Luca","doi":"10.1556/012.2019.56.4.1440","DOIUrl":"https://doi.org/10.1556/012.2019.56.4.1440","url":null,"abstract":"Abstract The Pell sequence (Pn)n=0∞ is given by the recurrence Pn = 2Pn−1 + Pn−2 with initial condition P0 = 0, P1 = 1 and its associated Pell-Lucas sequence (Qn)n=0∞ is given by the same recurrenc...","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83886967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On exponential decay of the variance of BLUE for the mean of a stationary sequence 平稳序列均值BLUE方差的指数衰减
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-12-01 DOI: 10.1556/012.2019.56.4.1448
N. Babayan, M. Ginovyan
{"title":"On exponential decay of the variance of BLUE for the mean of a stationary sequence","authors":"N. Babayan, M. Ginovyan","doi":"10.1556/012.2019.56.4.1448","DOIUrl":"https://doi.org/10.1556/012.2019.56.4.1448","url":null,"abstract":"Abstract In this paper, we obtain necessary as well as sufficient conditions for exponential rate of decrease of the variance of the best linear unbiased estimator (BLUE) for the unknown mean of a ...","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77047272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A remark on large gaps between primes in arithmetic progressions 关于等差数列中质数之间的大间隙的注释
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-12-01 DOI: 10.1556/012.2019.56.4.1443
D. Kaptan
{"title":"A remark on large gaps between primes in arithmetic progressions","authors":"D. Kaptan","doi":"10.1556/012.2019.56.4.1443","DOIUrl":"https://doi.org/10.1556/012.2019.56.4.1443","url":null,"abstract":"Abstract We record an implication between a recent result due to Li, Pratt and Shakan and large gaps between arithmetic progressions.","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73750538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A variant of the Fejér–Jackson inequality 这是fej<s:1> -杰克逊不等式的一个变体
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-12-01 DOI: 10.1556/012.2019.56.4.1438
H. Alzer, M. Kwong
{"title":"A variant of the Fejér–Jackson inequality","authors":"H. Alzer, M. Kwong","doi":"10.1556/012.2019.56.4.1438","DOIUrl":"https://doi.org/10.1556/012.2019.56.4.1438","url":null,"abstract":"\u0000 We prove: For all natural numbers n and real numbers x ∈ [0, π] we have .\u0000 The sign of equality holds if and only if n = 2 and x = 4π/5.","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86646670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On an Equation with Prime Numbers Close to Squares 关于一个素数接近平方的方程
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-10-10 DOI: 10.1556/012.2022.01522
S. Dimitrov
{"title":"On an Equation with Prime Numbers Close to Squares","authors":"S. Dimitrov","doi":"10.1556/012.2022.01522","DOIUrl":"https://doi.org/10.1556/012.2022.01522","url":null,"abstract":"Let [ · ] be the fioor function. In this paper, we show that when 1 < c < 37/36, then every sufficiently large positive integer N can be represented in the formwhere p1, p2, p3 are primes close to squares.","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86617695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Unmixed and Cohen–Macaulay Weighted Oriented Kőnig Graphs 未混合和Cohen-Macaulay加权定向Kőnig图
IF 0.7 4区 数学
Studia Scientiarum Mathematicarum Hungarica Pub Date : 2019-09-29 DOI: 10.1556/012.2021.58.3.1499
Yuriko Pitones, E. Reyes, R. Villarreal
{"title":"Unmixed and Cohen–Macaulay Weighted Oriented Kőnig Graphs","authors":"Yuriko Pitones, E. Reyes, R. Villarreal","doi":"10.1556/012.2021.58.3.1499","DOIUrl":"https://doi.org/10.1556/012.2021.58.3.1499","url":null,"abstract":"Let D be a weighted oriented graph, whose underlying graph is G, and let I (D) be its edge ideal. If G has no 3-, 5-, or 7-cycles, or G is Kőnig, we characterize when I (D) is unmixed. If G has no 3- or 5-cycles, or G is Kőnig, we characterize when I (D) is Cohen–Macaulay. We prove that I (D) is unmixed if and only if I (D) is Cohen–Macaulay when G has girth greater than 7 or G is Kőnig and has no 4-cycles.","PeriodicalId":51187,"journal":{"name":"Studia Scientiarum Mathematicarum Hungarica","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82692837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
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