A QUADRATIC SYSTEM WITH A CRITICAL FOCUS OF ORDER 3

来源 :科学通报：英文版 | 被引量 : 0次 | 上传用户：greenecho

【摘要】

：

<正> Under the guidauce of Prof. Chin Yuanshun, the author has studied a conjecture in the 16th problem of Hilbert’s 'there is no limit cycle around a crit

【作者】

：

杜星福

【机构】

：

JianghanCollege,Wuhan

【出处】

：

科学通报：英文版

【发表日期】

：

1983年4期

【关键词】

：

CONJECTURE EXPONENTIAL LETTER FOCUS holds logarithmic CYCLE DIVIDE 王初泊口

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

<正> Under the guidauce of Prof. Chin Yuanshun, the author has studied a conjecture in the 16th problem of Hilbert’s 'there is no limit cycle around a critical focus of order 3'. Denoting this conjecture by integrals, we divide it into three

其他文献

ON A CLASS OF DIOPHANTINE EQUATIONS

<正> P. Erds conjectured that there was no integral solution for the equation XxYy=Zz （1） when X>1, Y>1, Z>. Prof. Ko Chao was, later, asked to solve the equation

期刊

engagedaskedCLASSthemselvesholdsKuangINTEGERSTRIVIAL柯召二万

DISCRIMINATION OF BACILLUS ANTHRACIS AND RELATED BACILLI BY PYROLYSIS GAS CHROMATOGRAPHY

<正> Forty-three strains of bacilli belonging to 6 species (B. anthracis, B. cereus, B. subtilis, B. lichemiformis, B. pumilus and B. mycoides) were analyzed by

期刊

PYROLYSISfittedflamepumilusCEREUSIONIZATIONPLATINUMHewlettitselfinserte

UNITARY DILATION OF AN OPERATOR

<正> In this paper we are to discuss the general form of the unitary dilation of the operator on the Hilbert space or on the space with an indefinite metric.Let

期刊

UNITARYCONTRACTIONDILATIONnormsOPERATORS石坛士一少广少尹otherwise

农业中的物理(初二、初三)

在农业生产当中,有许多生产技术应用了初中物理知识.举例如下:1.摩擦犁地时,常要把犁打磨的很光滑,这样,就减少了犁和土地之间的摩擦,因而,犁起来就省力.拖拉机的外胎做得凹

期刊

初中物理农业生产优良种子生产技术光能转化空气对流比热比芽生长光反射北方地区

STANDARD HEAT OF FORMATION OF ALUMINUM HYDRIDE

<正> We have determined, by means of a bomb calorimeter, the amounts of energy of decomposition of a-AlH3 at constant volume. Two samples were used. The H-conte

期刊

CALORIMETERdeviation五如玉通BLANKAIH

SHOOT TIP CULTURE OF BLACK CURRANT (RIBES NIGRUM L.) IN VITRO AND ITS CYTOLOGICAL AND HISTOLOGICAL O

<正> Black currant is one species of the small fruit plants. The VC content of its fruits is 4 times as much as that of oranges, 40 times as much as that of app

期刊

FRUITSSHOOTcuttingthousandBROWNRIBESNIGRUMLSTOCKservationROOTSvaria

HEMOGLOBIN WUMING (all [A9] Lsy→Gln), A NEW HEMOGLOBIN VARIANT FOUND IN CHINA

<正> During the survey of hemogiobinopathies, a fast moving hemoglobin was found in one Chinese male of Zhuang nationality in Wuming County of tire Zhuang Auton

期刊

HEMOGLOBINcelluloseappearanceBANDSA9GLNLsyALLchainsACETATE

ELECTRO-WEAK THEORY IN SU(3)

<正> Ne’eman and Fairlie have recently attempted to embed the SU(2)×U(1) electro-weak group into a supersymmetric SU(2|1) gauge theory. Fairlie and others

期刊

EMBEDDINGdimensionsMANIFOLDgaugeGRADEDINVARIANTSverifiedtransformedATTEM

NONISOTONIC REABSORPTION OF WATER AND STEADYSTATE DISTRIBUTION OF SODIUM ION IN RENAL DESCENDING LIM

<正> Bossert and Schwartz proposed a conjecture that the quantity of water reabsorption in renal descending limb of Henle (DLH) is related to its surface area a

期刊

DESCENDINGglomerularpermeabilityCONJECTUREletterPERMEABLECORRECTSchwartz

THE DETERMINATION OF CHARGE TRANSFER AMOUNT ON NINE COMPLEXES OF THE PHENOXY TITANIUM CHLORIDE WITH

<正> In general, in a coordinate complex the dative bond exits between the atoms of the donor and the acceptor. Mulliken theoretically pointed out that the dati

期刊

dativeDONORfilledACCEPTORcoordinatepointedXPSstartingmater

A QUADRATIC SYSTEM WITH A CRITICAL FOCUS OF ORDER 3

与本文相关的学术论文