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Klein kwalban: abin da shi ne
Lissafi abu, daga baya ya kira "Klein kwalban", da aka farko aka bayyana a cikin 1882 da Jamusanci lissafi Feliksom Kleynom. Mene ne wannan? Wannan abu (ko fiye daidai, da na lissafi da kuma topological surface) akwai kawai ne ba a cikin uku-girma duniya. Duk da model da suke sayarwa a kyauta shagunan, da look, amma ba kadan ra'ayin game da abin da yake a Klein kwalban.
Klein kwalban bayanin harshen ilmin lissafi sharuddan da dabarbari ba zai ce wani abu ga nonprofessional. Mutane da yawa za su gamsar da wannan definition: Klein kwalban - shi ne orientable da yawa (ko surface) da ciwon yawan Properties. Bayan kalmar "dukiya" za ka iya gina wani dogon jerin kunshi trigonometric ayyuka, lambobi, da kuma Helenanci da kuma Roman haruffa. Sai dai kawai zai dame untrained mutum, sun samu wani ra'ayin abin da yake da tsinkaya da kwalabe a cikin wani uku-girma sarari.
Domin da yawa artists (musamman almarar kimiyya marubuta) ya bayyana m da Kalmar "Klein kwalban". Its amfani kamar yadda wani sifa, da kuma wani lokacin da main "fuska" ne wata ãyã daga "ilimi" almarar. Irin wannan, alal misali, da labarin "The Last Illusionist", na zuwa da alƙalami da Bruce Elliot. A cikin labarin na masihirci mataimakin fatattake tare da zama majiɓinci, suka yi dabaru da hudu-girma Klein kwalban. Karba kwalban illusionist kuma ya zauna rabin kura idon a cikinsa. A cewar marubucin, wannan kwalban ba za a iya karya ba tareda žata da abinda ke ciki. Saboda haka, ko yana da zahiri - babu wanda zai iya ce. A kalla lissafi, wanda zai iya amsa wannan tambaya, shi ne ba m, shi ne m zuwa kimiyya.
Lokaci-lokaci musamman sanya Klein kwalabe ga promotional dalilai na kwalba ruwan inabi. Duk da haka, ya yi irin wannan kwalban ne a zahiri wuya a gilashin, wannan na bukatar top-aji gilashin abun hura. Saboda haka, yana da tsadar da aka yi amfani da infrequently. A gwajin da fasaha da kuma samar da samar da irin wannan kwalabe a kan kwarara bai sa hankali, saboda shi, na bukatar aikin Hanyar ciko kwalabe da ruwa (a nan, kuma, akwai complexities). Kuma da ji na baƙuncin da kuma sabon abu zai sauri ƙwace damuwa mai haɗari ruwan inabi daga salkar ruwan inabi tabarau.
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