{"title":"超奇异积分理论及其在Navier-Stokes问题中的应用","authors":"A. Ramm","doi":"10.47443/cm.2020.0041","DOIUrl":null,"url":null,"abstract":"In this paper, the convolution integrals (cid:82) t 0 ( t − s ) λ − 1 b ( s ) ds with hyper-singular kernels are considered, where λ ≤ 0 and either b is a smooth function or b belongs to L 1 ( R + ) . For such λ , these integrals diverge classically even for smooth b . These convolution integrals are defined in this paper for negative non-integer values of λ . Integral equations and inequalities are considered with the hyper-singular kernels ( t − s ) λ − 1 + for λ ≤ 0 , where t λ + := 0 for t < 0 . In particular, one is interested in the value λ = − 14 because it is important for the Navier-Stokes problem (NSP). Integral equations of the type b ( t ) = b 0 ( t ) + (cid:82) t 0 ( t − s ) λ − 1 b ( s ) ds , λ ≤ 0 , are also studied. The solution of these equations is investigated, and the existence and uniqueness of the solution is proved for λ = − 14 . The obtained results are applied to the analysis of the NSP in the space R 3 without boundaries. It is proved that the NSP is contradictory in the following sense: even if one assumes that v ( x, 0) > 0 , one proves that the solution v ( x, t ) to the NSP has the property v ( x, 0) = 0 , in general. This paradox shows that the NSP is not a correct description of the fluid mechanics problem and it proves that the NSP does not have a solution, in general.","PeriodicalId":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Theory of hyper-singular integrals and its application to the Navier-Stokes problem\",\"authors\":\"A. Ramm\",\"doi\":\"10.47443/cm.2020.0041\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, the convolution integrals (cid:82) t 0 ( t − s ) λ − 1 b ( s ) ds with hyper-singular kernels are considered, where λ ≤ 0 and either b is a smooth function or b belongs to L 1 ( R + ) . For such λ , these integrals diverge classically even for smooth b . These convolution integrals are defined in this paper for negative non-integer values of λ . Integral equations and inequalities are considered with the hyper-singular kernels ( t − s ) λ − 1 + for λ ≤ 0 , where t λ + := 0 for t < 0 . In particular, one is interested in the value λ = − 14 because it is important for the Navier-Stokes problem (NSP). Integral equations of the type b ( t ) = b 0 ( t ) + (cid:82) t 0 ( t − s ) λ − 1 b ( s ) ds , λ ≤ 0 , are also studied. The solution of these equations is investigated, and the existence and uniqueness of the solution is proved for λ = − 14 . The obtained results are applied to the analysis of the NSP in the space R 3 without boundaries. It is proved that the NSP is contradictory in the following sense: even if one assumes that v ( x, 0) > 0 , one proves that the solution v ( x, t ) to the NSP has the property v ( x, 0) = 0 , in general. This paradox shows that the NSP is not a correct description of the fluid mechanics problem and it proves that the NSP does not have a solution, in general.\",\"PeriodicalId\":0,\"journal\":{\"name\":\"\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0,\"publicationDate\":\"2020-12-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://doi.org/10.47443/cm.2020.0041\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.47443/cm.2020.0041","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
摘要
本文研究了具有超奇异核的卷积积分(cid:82) t 0 (t−s) λ−1 b (s) ds,其中λ≤0且b是光滑函数或b属于L 1 (R +)。对于这样的λ,这些积分即使在光滑b上也是发散的。本文对λ的负非整数值定义了这些卷积积分。考虑了λ≤0时具有超奇异核(t -s) λ−1 +的积分方程和不等式,其中t < 0时t λ + = 0。特别地,人们对λ = - 14的值感兴趣,因为它对Navier-Stokes问题(NSP)很重要。研究了b (t) = b 0 (t) + (cid:82) t 0 (t−s) λ−1 b (s) ds, λ≤0的积分方程。研究了这些方程的解,并证明了当λ =−14时解的存在唯一性。并将所得结果应用于无边界空间r3中NSP的分析。在以下意义上证明了NSP是矛盾的:即使假设v (x, 0) >,也证明了NSP的解v (x, t)一般具有v (x, 0) = 0的性质。这一悖论表明NSP不是对流体力学问题的正确描述,并证明NSP通常没有解。
Theory of hyper-singular integrals and its application to the Navier-Stokes problem
In this paper, the convolution integrals (cid:82) t 0 ( t − s ) λ − 1 b ( s ) ds with hyper-singular kernels are considered, where λ ≤ 0 and either b is a smooth function or b belongs to L 1 ( R + ) . For such λ , these integrals diverge classically even for smooth b . These convolution integrals are defined in this paper for negative non-integer values of λ . Integral equations and inequalities are considered with the hyper-singular kernels ( t − s ) λ − 1 + for λ ≤ 0 , where t λ + := 0 for t < 0 . In particular, one is interested in the value λ = − 14 because it is important for the Navier-Stokes problem (NSP). Integral equations of the type b ( t ) = b 0 ( t ) + (cid:82) t 0 ( t − s ) λ − 1 b ( s ) ds , λ ≤ 0 , are also studied. The solution of these equations is investigated, and the existence and uniqueness of the solution is proved for λ = − 14 . The obtained results are applied to the analysis of the NSP in the space R 3 without boundaries. It is proved that the NSP is contradictory in the following sense: even if one assumes that v ( x, 0) > 0 , one proves that the solution v ( x, t ) to the NSP has the property v ( x, 0) = 0 , in general. This paradox shows that the NSP is not a correct description of the fluid mechanics problem and it proves that the NSP does not have a solution, in general.