[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.sais.sk\/rubikova-kocka-ake-zaujimavosti-skryva\/#Article","mainEntityOfPage":"https:\/\/www.sais.sk\/rubikova-kocka-ake-zaujimavosti-skryva\/","headline":"Rubikova kocka \u2013 ak\u00e9 zauj\u00edmavosti skr\u00fdva?","name":"Rubikova kocka \u2013 ak\u00e9 zauj\u00edmavosti skr\u00fdva?","description":"Ke\u010f Ma\u010far Ern\u04e7 Rubik pri\u0161iel s t\u00fdmto vyn\u00e1lezom, ktor\u00fd mal skr\u00e1ti\u0165 dlh\u00fa chv\u00ed\u013eu a z\u00e1rove\u0148 tr\u00e9nova\u0165 na\u0161e logick\u00e9 schopnosti, pravdepodobne neo\u010dak\u00e1val tak\u00fd ve\u013ek\u00fd ohlas a ob\u013e\u00fabenos\u0165. A predsa, aj po takmer 50 rokoch, \u013eud\u00ed (najm\u00e4 teda vedcov) st\u00e1le zauj\u00edma a fascinuje t\u00e1to na poh\u013ead jednoduch\u00e1, farebn\u00e1 kocka. Tento hlavolam gener\u00e1ci\u00ed \u0161tudovali po cel\u00e9 roky r\u00f4zne...","datePublished":"2020-01-23","dateModified":"2023-04-28","author":{"@type":"Person","@id":"https:\/\/www.sais.sk\/author\/#Person","name":"","url":"https:\/\/www.sais.sk\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/e4532b7f65738965bbad8697e5bd54c0628af7bffe8d3c856885c44d86978cee?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/e4532b7f65738965bbad8697e5bd54c0628af7bffe8d3c856885c44d86978cee?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"sais.sk","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.sais.sk\/wp-content\/uploads\/img_a309735_w16891_t1580221199.jpg","url":"https:\/\/www.sais.sk\/wp-content\/uploads\/img_a309735_w16891_t1580221199.jpg","height":0,"width":0},"url":"https:\/\/www.sais.sk\/rubikova-kocka-ake-zaujimavosti-skryva\/","about":["Veda"],"wordCount":449,"articleBody":"Ke\u010f Ma\u010far Ern\u04e7 Rubik pri\u0161iel s t\u00fdmto vyn\u00e1lezom, ktor\u00fd mal skr\u00e1ti\u0165 dlh\u00fa chv\u00ed\u013eu a z\u00e1rove\u0148 tr\u00e9nova\u0165 na\u0161e logick\u00e9 schopnosti, pravdepodobne neo\u010dak\u00e1val tak\u00fd ve\u013ek\u00fd ohlas a ob\u013e\u00fabenos\u0165. A predsa, aj po takmer 50 rokoch, \u013eud\u00ed (najm\u00e4 teda vedcov) st\u00e1le zauj\u00edma a fascinuje t\u00e1to na poh\u013ead jednoduch\u00e1, farebn\u00e1 kocka. Tento hlavolam gener\u00e1ci\u00ed \u0161tudovali po cel\u00e9 roky r\u00f4zne t\u00edmy matematikov, a jednou z ot\u00e1zok oh\u013eadom nej, ktorou sa zaoberali, bola pravdepodobne t\u00e1, ktor\u00fa ste si neraz polo\u017eili aj vy sami:Na ko\u013eko najmenej oto\u010den\u00ed sa \u013eubovo\u013ene pomie\u0161an\u00e1 kocka d\u00e1 zlo\u017ei\u0165 do p\u00f4vodn\u00e9ho stavu? Ak ju rozh\u00e1d\u017eete pr\u00e1ve 200 \u0165ahmi, tak potom je ist\u00e9, \u017ee ju mo\u017eno vr\u00e1ti\u0165 sp\u00e4\u0165 v 200 alebo menej \u0165ahoch. Kde v\u0161ak le\u017e\u00ed to absol\u00fatne maximum? Hoci to trvalo dos\u0165 dlho, zd\u00e1 sa, \u017ee u\u017e nejak\u00fa dobu na \u0148u m\u00e1me sol\u00eddnu odpove\u010f. Ak ste n\u00e1hodou o nej e\u0161te nepo\u010duli, rozhodne \u010d\u00edtajte \u010falej. Bo\u017esk\u00e9 \u010d\u00edslo \u2013 hranice mo\u017enost\u00ed Niekedy naz\u00fdvan\u00e9 aj Bo\u017e\u00ed algoritmus (God\u2019s algorithm). M\u00f4\u017ee by\u0165 pou\u017eit\u00e9 vo viacer\u00fdch matematick\u00fdch v\u00fdznamoch a probl\u00e9moch, v ktor\u00fdch ide o nejak\u00fd po\u010det \u0165ahov pre v\u00fdhru \u010di rie\u0161enie. V tomto pr\u00edpade sa v\u0161ak budeme zaobera\u0165 t\u00fdm, ktor\u00e9 sa t\u00fdka Rubikovej kocky. Niektor\u00fd fan\u00fa\u0161ikovia sa zaoberaj\u00fa len r\u00fdchlim skladan\u00edm, pri\u010dom mnohokr\u00e1t si myslia, \u017ee sta\u010d\u00ed dobr\u00fd postup, r\u00fdchle ruky a ve\u013ea tr\u00e9ningu. Nam\u00fdlia sa tak \u00faplne, no predsa zab\u00fadaj\u00fa na nie\u010do d\u00f4le\u017eit\u00e9 \u2013 ak naozaj existuje \u201emagick\u00e9\u201c \u010d\u00edslo, o ktorom sa d\u00e1 poveda\u0165, \u017ee pri akoko\u013evek popret\u00e1\u010danej kocke bude potrebn\u00fdch najviac to\u013ekoto ot\u00e1\u010dok na rie\u0161enie, nebolo by jednoduch\u0161ie sna\u017ei\u0165 sa n\u00e1js\u0165 pr\u00e1ve to a n\u00e1sledne s n\u00edm pracova\u0165 pri h\u013eadan\u00ed vhodn\u00e9ho postupu? Preto vznikla druh\u00e1 skupinky nad\u0161encov tejto \u0161katu\u013eky, zameran\u00fdch na tento probl\u00e9m. Po nieko\u013eko rokov sa v\u0161ak toto \u010d\u00edslo menilo. Najsk\u00f4r sa potvrdilo, \u017ee 52 sta\u010d\u00ed, no po\u010das nasleduj\u00facich desa\u0165ro\u010d\u00ed sa t\u00e1to postupne zmen\u0161ovalo. Nakoniec sa v 2010 dok\u00e1zalo, \u017ee Bo\u017eie \u010d\u00edslo je len 20, \u010do je takmer a\u017e neuverite\u013en\u00fd poznatok. Samozrejme, samotn\u00fd praktick\u00fd d\u00f4kaz sa zd\u00e1 takmer nemo\u017en\u00fd, ale len takmer. Ak sa s \u0148ou nabud\u00face budete zab\u00e1va\u0165, nezabudnite si to sk\u00fasi\u0165. Za pokus predsa ni\u010d ned\u00e1te. A ktovie, mo\u017eno sami objav\u00edte jedno z tajomstiev Rubikovho r\u00e9busu.                                                                                                                                                                                                                                                                                                                                                                                        4.6\/5 - (8 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Rubikova kocka \u2013 ak\u00e9 zauj\u00edmavosti skr\u00fdva?","item":"https:\/\/www.sais.sk\/rubikova-kocka-ake-zaujimavosti-skryva\/#breadcrumbitem"}]}]