{"title":"抛物线中心不存在的一个简单证明","authors":"S. Dasgupta","doi":"10.2139/ssrn.3879153","DOIUrl":null,"url":null,"abstract":"The study about the centre of a conic section is always a major part in basic coordinate geometry. This study consists of the existence and finding of the centre of a given conic. In many books of coordinate geometry we usually notice a statement that the centre of a parabola is at infinity. But this statement is actually wrong. The correct statement should be there exist no centre of a parabola. Because ‘at infinity’ means there exist but we can’t find it. Here we had proved this simple thing using very simple algebraic calculations. We had also enclosed the long calculative classical method of it as defined in some well known coordinate geometry books.","PeriodicalId":432647,"journal":{"name":"Logic & Philosophy of Mathematics eJournal","volume":"620 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Simple Proof Of The Non Existence Of The Centre Of A Parabola\",\"authors\":\"S. Dasgupta\",\"doi\":\"10.2139/ssrn.3879153\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The study about the centre of a conic section is always a major part in basic coordinate geometry. This study consists of the existence and finding of the centre of a given conic. In many books of coordinate geometry we usually notice a statement that the centre of a parabola is at infinity. But this statement is actually wrong. The correct statement should be there exist no centre of a parabola. Because ‘at infinity’ means there exist but we can’t find it. Here we had proved this simple thing using very simple algebraic calculations. We had also enclosed the long calculative classical method of it as defined in some well known coordinate geometry books.\",\"PeriodicalId\":432647,\"journal\":{\"name\":\"Logic & Philosophy of Mathematics eJournal\",\"volume\":\"620 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-07-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Logic & Philosophy of Mathematics eJournal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2139/ssrn.3879153\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Logic & Philosophy of Mathematics eJournal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2139/ssrn.3879153","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A Simple Proof Of The Non Existence Of The Centre Of A Parabola
The study about the centre of a conic section is always a major part in basic coordinate geometry. This study consists of the existence and finding of the centre of a given conic. In many books of coordinate geometry we usually notice a statement that the centre of a parabola is at infinity. But this statement is actually wrong. The correct statement should be there exist no centre of a parabola. Because ‘at infinity’ means there exist but we can’t find it. Here we had proved this simple thing using very simple algebraic calculations. We had also enclosed the long calculative classical method of it as defined in some well known coordinate geometry books.