{"id":239,"date":"2017-02-20T00:26:18","date_gmt":"2017-02-19T23:26:18","guid":{"rendered":"http:\/\/feuilletages-algebriques.math.cnrs.fr\/?page_id=239"},"modified":"2017-02-20T23:48:52","modified_gmt":"2017-02-20T22:48:52","slug":"demonstration-de-la-propriete-mathcal-e","status":"publish","type":"page","link":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/demonstration-de-la-propriete-mathcal-e\/","title":{"rendered":"D\u00e9monstration de la propri\u00e9t\u00e9 \\( (\\mathcal E)\\)"},"content":{"rendered":"<p>Nous montrons ici que le syst\u00e8me d&rsquo;it\u00e9ration pr\u00e9sent\u00e9 <a href=\"http:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/un-exemple-de-systeme-diteration-verifiant-mathcal-e\/\">l\u00e0<\/a>\u00a0v\u00e9rifie bien la <a href=\"http:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/une-equation-fonctionnelle-sur-les-systemes-diterations\/\">propri\u00e9t\u00e9 \\( (\\mathcal E)\\)<\/a>.<\/p>\n<p>Le tore \\( T_k\\) est obtenu en quotientant \\( D&rsquo; \\setminus h_k'(\\text{Int}(D&rsquo;)) \\) via la relation \\( z&rsquo;\\sim h_k'(z&rsquo;)\\) si \\( z&rsquo;\\in \\partial D&rsquo;\\). En fait, on s&rsquo;assure ais\u00e9ment que \\(T_k\\) est \u00e9galement le quotient de \\( D \\setminus h_k(\\text{Int}(D)) \\) par la relation \\(z\\sim \u00a0h_k(z)\\) si \\( z\\in \\partial D\\). (voir \u00e0 ce propos la relation sur les syst\u00e8mes d&rsquo;it\u00e9ration, pr\u00e9sent\u00e9e <a href=\"http:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/une-equation-fonctionnelle-sur-les-systemes-diterations\/\">ici<\/a>)<\/p>\n<p>Le tore \\( T_1 \\) est donc form\u00e9 d&rsquo;une partie constitu\u00e9e de quatre triangles isom\u00e9triques au triangle hyperbolique d&rsquo;angles \\(( \\pi\/7,\\pi\/7,\\pi\/7) \\), et d&rsquo;une copie de \\( h_2(D) \\), coll\u00e9s suivant la combinatoire \u00a0repr\u00e9sent\u00e9e sur la figure suivante<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-289 aligncenter\" src=\"http:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_115240_resized-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_115240_resized-300x169.jpg 300w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_115240_resized-768x432.jpg 768w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_115240_resized-1024x576.jpg 1024w\" sizes=\"auto, (max-width: 300px) 85vw, 300px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>De m\u00eame, le tore \\( T_2 \\) est form\u00e9 d&rsquo;une partie constitu\u00e9e de quatre triangles \\(( \\pi\/7,\\pi\/7,\\pi\/7) \\), et d&rsquo;une copie de \\( h_1(D) \\), coll\u00e9s suivant la combinatoire \u00a0repr\u00e9sent\u00e9e sur la figure suivante<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-288 aligncenter\" src=\"http:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_115300_resized-e1487588468263-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_115300_resized-e1487588468263-300x169.jpg 300w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_115300_resized-e1487588468263-768x432.jpg 768w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_115300_resized-e1487588468263-1024x576.jpg 1024w\" sizes=\"auto, (max-width: 300px) 85vw, 300px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>On constate que dans le rev\u00eatement universel \\( \\tilde{T_2}\\) de \\(T_2\\), \u00a0le domaine fondamental suivant a exactement la m\u00eame combinatoire que celle apparaissant dans la construction de \\( T_1 \\) :<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-278 aligncenter\" src=\"http:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_110506_resized-169x300.jpg\" alt=\"\" width=\"169\" height=\"300\" srcset=\"https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_110506_resized-169x300.jpg 169w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_110506_resized-768x1365.jpg 768w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_110506_resized-576x1024.jpg 576w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_110506_resized.jpg 1377w\" sizes=\"auto, (max-width: 169px) 85vw, 169px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Ainsi, l&rsquo;\u00e9quation fonctionnelle \\( (\\mathcal E) \\) est bien satisfaite dans ce cas, ce que nous voulions \u00e9tablir.<\/p>\n<p>&nbsp;<\/p>\n<p>Notons \\(\\Phi\\) le biholomorphisme entre \\(T_1\\) et \\( T_2\\) qui \u00e9tend \\( h_1\\circ h_2^{-1} \\) en restriction \u00e0 \\( h_2(D) \\subset T_1 \\). Il est int\u00e9ressant de comprendre la classe d&rsquo;homotopie\u00a0\u00a0de \\(\\Phi\\), et notamment quelle est la configuration des classes d&rsquo;homologie \\( \\Phi_* \\gamma_1 \\) et \\(\\gamma_2 \\) dans \\(H_1(T_2,\\mathbb Z)\\), o\u00f9 \\( \\gamma_k \\) est par d\u00e9finition la classe de la courbe \\(\\partial D\\sim h_k (\\partial D) \\) dans \\( T_k\\), munie de l&rsquo;orientation directe induite par \\(\\partial D\\). Ces classes sont repr\u00e9sent\u00e9es sur la figure suivante<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-290 aligncenter\" src=\"http:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_120334_resized-e1487588735520-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_120334_resized-e1487588735520-300x169.jpg 300w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_120334_resized-e1487588735520-768x432.jpg 768w, https:\/\/feuilletages-algebriques.math.cnrs.fr\/wp-content\/uploads\/2017\/02\/20170220_120334_resized-e1487588735520-1024x576.jpg 1024w\" sizes=\"auto, (max-width: 300px) 85vw, 300px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>qui compl\u00e8te les figures pr\u00e9c\u00e9dentes. Dans la base \\( [a_2], [b_2] \\) de \u00a0 \\(H_1(T_2,\\mathbb Z)\\), on obtient donc<\/p>\n<p>&nbsp;<\/p>\n<p>\\[ \\Phi_* \\gamma_1 = (1,2) \\text{ \u00a0et } \\gamma_2 = (1,-1) . \\]<\/p>\n<p>&nbsp;<\/p>\n<p>Dans la base \\( [a_2+2 b_2] , [b_2] \\), on a<\/p>\n<p>\\[ \\Phi_* \\gamma_1 = (1,0) \\text{ \u00a0et } \\gamma_2 = (1,-3) . \\]<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous montrons ici que le syst\u00e8me d&rsquo;it\u00e9ration pr\u00e9sent\u00e9 l\u00e0\u00a0v\u00e9rifie bien la propri\u00e9t\u00e9 \\( (\\mathcal E)\\). Le tore \\( T_k\\) est obtenu en quotientant \\( D&rsquo; \\setminus h_k'(\\text{Int}(D&rsquo;)) \\) via la relation \\( z&rsquo;\\sim h_k'(z&rsquo;)\\) si \\( z&rsquo;\\in \\partial D&rsquo;\\). En fait, on s&rsquo;assure ais\u00e9ment que \\(T_k\\) est \u00e9galement le quotient de \\( D \\setminus h_k(\\text{Int}(D)) &hellip; <a href=\"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/demonstration-de-la-propriete-mathcal-e\/\" class=\"more-link\">Continuer la lecture<span class=\"screen-reader-text\"> de &laquo;&nbsp;D\u00e9monstration de la propri\u00e9t\u00e9 \\( (\\mathcal E)\\)&nbsp;&raquo;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-239","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/wp-json\/wp\/v2\/pages\/239","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/wp-json\/wp\/v2\/comments?post=239"}],"version-history":[{"count":20,"href":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/wp-json\/wp\/v2\/pages\/239\/revisions"}],"predecessor-version":[{"id":304,"href":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/wp-json\/wp\/v2\/pages\/239\/revisions\/304"}],"wp:attachment":[{"href":"https:\/\/feuilletages-algebriques.math.cnrs.fr\/index.php\/wp-json\/wp\/v2\/media?parent=239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}