CINXE.COM
Just a moment...
<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '913508f6eb68fd83',cH: 'ESF1oyx8vu40Lu_O74JwMXfT5mtZF8iIcSKYoKRs1QE-1739787523-1.2.1.1-gygFIRI.WV7cXvi1n0eH_g00p_sxZpw6IAfUdaHotSIxzsApJrygHLnbLtIV1ftM',cUPMDTk: "\/search?q=hypergraphs&__cf_chl_tk=CA5l81.quUvtxFx904b6srzRp.xaRpxAKdrTjkanTGM-1739787523-1.0.1.1-TlCiPZT0u6440lM.29OMIrKiB_sFWKVPUp9E2ATGvn0",cFPWv: 'b',cITimeS: '1739787523',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=hypergraphs&__cf_chl_f_tk=CA5l81.quUvtxFx904b6srzRp.xaRpxAKdrTjkanTGM-1739787523-1.0.1.1-TlCiPZT0u6440lM.29OMIrKiB_sFWKVPUp9E2ATGvn0",md: "kyJ.0zz5z_zeUEpPLmxYH9E7WAbNIr07Re09E9cz9Vc-1739787523-1.2.1.1-5.YbG4H6MSKyXHq3WodUqWo.3AXzgygvIYBOTD0ho4r5OBuvmO1.5jXiv4cQYqkP5ECLnfN2AsX1nCcITJIG7OkiyiYWzJRw8jqDyacfUrX62ZZpFYFHXlZQC4vKSdeBKk0B75TecFy8eTNG.eyVGeYi4MBWWbRYkzS7pZalFMVmO8QdMrHT3iztUt8gtjnL7P01B3mcKJ19h6Lg27AwbzmEuTHPK4vvMZE_nItgfe_qHPdIa.VcW9t.LyAgrKnH9LrwlC_UO8Z.6.rbevAr6Bz6.H2q2KS0wS7AoIeq0_RunpFmm7XiiLK2nER90.yN4e1woIh_j5WFmGE3lRsJHiubhYe2K_TjSYfc26yvRjECwsC4DAawmXrwZ5OU8frjSI.zkEEsjvkQKOLts.XMiQtRe0KkzVNVZXzX3zLcq.b6DwUZdMuR73KfiFwwadTZ0w8F7BpKG37kqtoEu2Y3wR6X2aFMZkfSqZLHquXpky6o0nCFK6J9FBAYtfeVRVz_WnE4PaHFSr5NbBSLsVfnGAwZMjX1HMArv6YwPukMikybloOAU6Qs5Ee7LRzbHw3nu8eEeU271AqQta3DE_sTCKBA8ZDRshzpbXcn0eb0Fo0SfMJbKPZiu3f1F57YfSkVlvq.5Shjg3RqRu_yEd02NmqI4ZL3fcvci8tybIp.HDsYl3a8SkmA7oNfRNYM7zfFWjs_eHwMwPbddmpdqSeCZPGwGptQunH_xFDA_oQEvkkmKiGlGFl6Zxxh.68in9FQqfDXO0Itw78J3aW_8TQ2n0LYshNjBbdsZTTHGmMzkeLSqHXvbx.DmnRaj6vkkALjM6c4f2avNRFRybb2gbek9mKjsp0hsf0eZ.1D_NrlZOMo.7ITzQ9izAquezpQoNnBqq3mHj3ohASO6IWIPos9tQDpTQV7Qpi1l5NGHomIehRcJy4mbwuFIuizGf4s_oO1XOgNabrB82gFaxOJCPeE4P93BY4K6v0_sIO1LVoRrIHamN0YVaWGxC5tfSs.piGpnDBGFWU44Q6_N5L7w2qNft7kZqZVLlwHc725vQZ02DLpWjH2r.NW466dYCLUU24efsAdfKIMzAGYLFt54ckvG8Nh358I_KRxlx5WRUdURWmFDNSvj4aeHVJ4NK2ap1gzfaLk2T_obG.CfKDOci4zPCfT9x.Ssm0v2s6eaeqlSri6rLL_ZLCWquSUHhA_ZhvyQUR5OuZ5lKK8Cyp9_3n_m8.tMKv3ALE.0tLfkOj0Cjou.X9zWhCvlYy7BllA9PN2xSNsgDMt.BU9zTXpFeP.nrh005QAZjRMqDKoLL2Qh9VD1kYfnwOpmnO19YZIy3nrOH30JQYmkqg8UIv_N0N.HcIVPy2aAnKMqTdMdKmpbDBfj7cFQ0trgelN25oCSvCdbJtS05OzUKFcHat7k629oZ9zGtp.7_zrpQyVAdyA9fmLRF5pffTWVWAM5cG6s50z49453enppc3HA3YDUm4GxsmIF5D5f_8gZe9FC8RyNBZhjI1x99gnrMTAOjwfrJHyTscL70HIFvgDCJOBza2N1DF8Oo8iWZHVYiUpB2dEJvPshqdsCgZcBZfCfTvd9ABWx9VFKksEk746SQaBX35f95T7q9_k0RjdCmU.QKW8pewxFnHke6hXncCqI76sdineiLLFFOVZ.yjcy58uFx2TPQSpacNCxAk7_eN0RW.WucFgTivVfz4ogNSLaoFBnHwLTjEEF4t_asuJ0O849Yo7ktdvhvsiw8SLn0cm_uscepO_QPeWDTRBglwJiUILs8AZsZTm.CLByTXnP.qCbs_ri40_VBHfuvftAqFbeYAu2OHzazK3N3Czm1YkV7MIF9vvwd9ovp946EShMGIyus7.2u.ql6rnHks7JPSrpVPBUNEAJlJ61rqMoK2DsRY83qw_",mdrd: "kTvAbiqUBjG0yRYW6gfYNPTytseqdo5qe.rCO6To3Mk-1739787523-1.2.1.1-.4IEvp5svlXCfuwF7rRRu8_.wxYbxe1nNwZpNYapX9WmDbe84EF6NSL8Kl0lp_9usqRyjOVvsfvDuoiPz5LEH01eUsDpXh0plg3llVfTj38sCrNHpjgtpVYBbNONsigyqKiXRrzz1iwJobjfWoz3v96RMdDHd1QqXcX2WYTI4Vb861AsH98GKoXjxXjxts54SR52ReqMTY6ltXD5z2kuCHLsxkpH3gURxSu6fbyLieo33E5W28ByoTuE.L0EP3ClIAOQvyx4Toy548rL11Jgq3Dr.4p2b.1PI3gai7sfLccD9GhJbdsB047QNG0J6UESpeXT5Jh3KT0VRk3LnxWaN9FMVPFvVylgvTtQMCBgxghST1WLduu54d2z_3MljWH30CHtPKdk3oQxMbX07ClwWebpwqmYjAiSCze2Pwb3Tc7zB2tngCqnVWahx52YladUnv9SiXNxpC.Ux0RKTA5U5O5FG1dHE.UXwGiHqSZ0M5Ck7ahF43.e53gSrhqWqUlL9xHFHgkyXHRb0SWcgMqc29ynlf8G.lnsNtosnJuoGxCpYOdeYvTvqwIlf_Ng6vQLjG4XZyi7MBHYXuaO6cdkW3yZHFqz7gszBCihNaRHhxWHA5O94ECdPNs1Uxy6X.oqxWZCGEzTrCj4S.dN6HJUhlXwOfPZN6ewCyarLwTeifCWlXU9oxvWPnVSXejsLeo0XEhuY8SWb7H8VVwQiyQqgDJOSS6RkJsc_LH6uKPojsXqPSbdwg13W4Fy_wfJzn.r5yE5mjrh38L3bk6YZr22aPQDetp8J4xwM9rgvQG.r6vGlv1gK13tplWMWSUJ_kuvZJ6Yz1P.QJW44iutxko3..RU6vN4EKXCT_Y.ZiLh5DE4x6KBRzE1T07kRI1NQOXYDia3zdtvybCnU7L_lgc2vixyV6U.BHwKR2psfdPyGtaY4paBEX5g5ppfwNqR9swHPwWeeFcB_2lr39IwlEmcKU8nY_eUNPv9pdUNjADIIr2Xt3ehI0dHKpWlaYApNI0NA6i0ImMtmNJNr2on_Rwh.btpJpRoxuGOhGqFuZG1gTCChyFuNIQiGy9YyfK8MFNpIdOYIds11D_WVFPnOUaU2PsMqIKL9G0l.bHdV8nsiGhMF0vu_kb55E.nwm.aM_Q4to5woc54Uj1ITLs73v37B5QzdI7nAVifoQKdd2SVWlWivSxYYV1YvO2bhvhQeC7cSjvqbzECRc5RN68yfiJXsEv2UWnDsd0pkGBstkj9tYkm8A9_B3.KXUi548Pd8CVmbZ8zIcOkydDL_Fux9c8gWGNr6zxn9OtGvKs3t1yVOyud9mNuevk79UBu93l7zEzNjBZKCMFm01YSZJIrV2i4O_MqgbZk4P6T3oeNgYILn3xk9rrKkOcvVFscXxzi.vo4R.A1XokIzzPoSZKMSZzaKHpYmngPu7QAeNiejklW79O4TGet.UV3V.HHVjhW5Wvs8L17eSLBM08w.RFrbBOzrwBaqpfGmVPrV1FZD_Qb5VQ8J9btj8RbZB4ShIljh_cJsJGpA5Bzh7VWU2oBqQXliwvgEa47U5CJP9OOweWp3SYWjOz5Y.0BnAdd7Dx9C7boDzHsfIdLA_uPaFNJmAuHv4HMZqdwXJPkhhMOc2x.QeAtdt0rNsJTGANj14Or0Az07zG2B9hsz53i5qC_DlJjrPlCxCcbIQTV3f4NxhiQfkQYj2XmTNDzIGCp_ITW_HBeltWIbXba0EHxefvN0qHOJoy0pmEpWshC46fqKk3SjknPA82xcFVGEN0_kr501EEirbyUyKPfLohqrRDXmqkHMeuXPuy4D7me1F.awVifSo7O1Mn.2C1pi5xK.ohQhuWsQygRADmBdzYCLILu3mfE7qVeT1SncG_DtIx1ux._AhKOluedHVeD7EFeuWSZIGNRNO5dpmtjKUQjxxEx3IwR78OIWzAHEKF_89wbHa1riAZS6O5N4nlvSeTQKurgyZC1"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=913508f6eb68fd83';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/search?q=hypergraphs&__cf_chl_rt_tk=CA5l81.quUvtxFx904b6srzRp.xaRpxAKdrTjkanTGM-1739787523-1.0.1.1-TlCiPZT0u6440lM.29OMIrKiB_sFWKVPUp9E2ATGvn0" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>