{"id":41456,"date":"2023-04-06T17:18:48","date_gmt":"2023-04-06T17:18:48","guid":{"rendered":"https:\/\/www.africa-press.net\/niger\/politique\/maths-des-chiffres-trop-importants-pour-etre-imagines"},"modified":"2023-04-06T17:56:13","modified_gmt":"2023-04-06T17:56:13","slug":"maths-des-chiffres-trop-importants-pour-etre-imagines","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/maths-des-chiffres-trop-importants-pour-etre-imagines","title":{"rendered":"Maths : Des chiffres trop importants pour \u00eatre imagin\u00e9s"},"content":{"rendered":"

Africa-Press – Niger. <\/strong><\/span>Lorsque l’on de\u0301passe les billions, on trouve des nombres extre\u0302mement surprenants, explique Richard Fisher. Certains d’entre eux sont trop grands pour tenir dans l’esprit – ou me\u0302me dans l’univers connu.<\/p>\n

Quel est le plus grand nombre auquel vous pouvez penser ? Quand j’e\u0301tais enfant, c’est le genre de question que l’on se posait dans la cour de re\u0301cre\u0301ation. Quelqu’un re\u0301pondait quelque chose de de\u0301sespe\u0301re\u0301ment nai\u0308f comme \u00ab\u00a0un milliard de milliards de milliards\u00a0\u00bb, avant d’e\u0302tre devance\u0301 par un camarade qui parlait de trillions, de squillions ou de kajillions (peu importe qu’un seul de ces nombres soit re\u0301el).<\/p>\n

Finalement, quelqu’un se souviendra qu’il connaissait la re\u0301ponse gagnante : \u00ab\u00a0l’infini !\u00a0\u00bb. Mais l’autosatisfaction est de courte dure\u0301e. Un autre enfant a rapidement fait remarquer qu’il pouvait le battre, avec \u00ab\u00a0l’infini… plus un\u00a0\u00bb.<\/p>\n

Essayer d’imaginer et de comprendre les tre\u0300s grands nombres, cependant, est plus qu’un simple jeu de cour de re\u0301cre\u0301ation. Les mathe\u0301maticiens y re\u0301fle\u0301chissent depuis des sie\u0300cles. Ils ont propose\u0301 l’existence de nombres si e\u0301normes qu’aucun e\u0302tre humain n’a jamais re\u0301ussi a\u0300 les imaginer en entier, et encore moins a\u0300 les e\u0301crire. Quant a\u0300 l’infini, il s’ave\u0300re qu’il en existe plus d’un – et, de manie\u0300re contre-intuitive, certains infinis sont plus grands que d’autres.<\/p>\n

Commenc\u0327ons par une e\u0301vidence qui n’a pas e\u0301te\u0301 comprise par l’enfant que j’e\u0301tais a\u0300 l’a\u0302ge de 10 ans. Il n’existe pas de nombre spe\u0301cifique que l’on pourrait qualifier de plus grand, puisque les nombres naturels sont infinis. Vous ne pouvez pas gagner le jeu de la cour de re\u0301cre\u0301ation.<\/p>\n

Toutefois, cela ne signifie pas que tous les grands nombres ont e\u0301te\u0301 pense\u0301s, exprime\u0301s, e\u0301crits… ou me\u0302me repre\u0301sente\u0301s par des ordinateurs.<\/p>\n

Grimpons d’abord dans l’e\u0301chelle des nombres directement au-dela\u0300 de ceux utilise\u0301s dans la vie quotidienne. Dans les titres des journaux, les plus grands nombres – ceux de la dette nationale, par exemple – s’expriment en milliers de milliards. Mais il existe une hie\u0301rarchie de nombres toujours plus grands qui viennent ensuite, et dont les noms sont rarement mentionne\u0301s. Cela commence par les quadrillions, les quintillions, les sextillions, etc. Un quadrillion (version ame\u0301ricaine) compte 15 ze\u0301ros, un quintillion en compte 18 et un sextillion en compte 21.<\/p>\n

Pour plus d’informations et d’analyses sur la Niger<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Niger. Lorsque l’on de\u0301passe les billions, on trouve des nombres extre\u0302mement surprenants, explique Richard Fisher. Certains d’entre eux sont trop grands pour tenir dans l’esprit – ou me\u0302me dans l’univers connu. Quel est le plus grand nombre auquel vous pouvez penser ? Quand j’e\u0301tais enfant, c’est le genre de question que l’on se […]<\/p>\n","protected":false},"author":82,"featured_media":41455,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[55,60,29],"class_list":["post-41456","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-niger","tag-niger"],"yoast_head":"\nMaths : Des chiffres trop importants pour \u00eatre imagin\u00e9s - niger<\/title>\n<meta name=\"description\" content=\"Lorsque l'on de\u0301passe les billions, on trouve des nombres extre\u0302mement surprenants, explique Richard Fisher. 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