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kozmoforum.hu Tudományos és ismeretterjesztő beszélgetések az Életről, a Világmindenségről, meg Mindenről. 2015-07-02T10:05:15+02:00 https://www.teszt.kozmoforum.hu/feed.php?f=9&t=228 2015-07-02T10:05:15+02:00 2015-07-02T10:05:15+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5738#p5738 <![CDATA[Re: Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: liederivative — 2015.07.02. 10:05

]]> 2015-07-01T19:08:59+02:00 2015-07-01T19:08:59+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5735#p5735 <![CDATA[Re: Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: 20 karakter lehet? — 2015.07.01. 19:08

]]> 2015-06-30T15:03:59+02:00 2015-06-30T15:03:59+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5727#p5727 <![CDATA[Re: Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: liederivative — 2015.06.30. 15:03

]]> 2015-06-29T08:43:50+02:00 2015-06-29T08:43:50+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5718#p5718 <![CDATA[Re: Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: 20 karakter lehet? — 2015.06.29. 08:43

]]> 2015-06-29T03:37:10+02:00 2015-06-29T03:37:10+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5717#p5717 <![CDATA[Re: Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: liederivative — 2015.06.29. 03:37

]]> 2015-06-28T15:52:19+02:00 2015-06-28T15:52:19+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5716#p5716 <![CDATA[Re: Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: 20 karakter lehet? — 2015.06.28. 15:52

]]> 2015-06-18T04:49:40+02:00 2015-06-18T04:49:40+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5647#p5647 <![CDATA[Re: Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: liederivative — 2015.06.18. 04:49

]]> 2015-06-17T14:57:37+02:00 2015-06-17T14:57:37+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5636#p5636 <![CDATA[Re: Algebrai geometria, topologia]]>
Egy negatív eredmény: Semmilyen n-dimenziós zárt sokaság (tehát pl. a tórusz, Klein-kancsó, akárhány dimenziós gömbfelület) nem ágyazható be az n-dimenziós térbe.

Pozitív eredmény: minden n-dimenziós sima sokaság beágyazható a 2n-dimenziós térbe. https://en.wikipedia.org/wiki/Whitney_embedding_theorem

A 2-dimenziós zárt felületek tehát beágyazhatóak -be, de nem ágyazhatóak be -be. Az, hogy 3 vagy 4 dimenzióba ágyazhatóak-e be, attól függ, hogy irányíthatóak, vagy sem.

Statisztika: Elküldve Szerző: xyz — 2015.06.17. 14:57

]]> 2015-06-16T19:56:22+02:00 2015-06-16T19:56:22+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5627#p5627 <![CDATA[Re: Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: dgy — 2015.06.16. 19:56

]]> 2015-06-16T18:36:48+02:00 2015-06-16T18:36:48+02:00 https://www.teszt.kozmoforum.hu/viewtopic.php?t=228&p=5622#p5622 <![CDATA[Algebrai geometria, topologia]]> Statisztika: Elküldve Szerző: 20 karakter lehet? — 2015.06.16. 18:36

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