CINXE.COM

<!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,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);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="390"></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: "essopenarchive.org",cType: 'managed',cRay: '9138197d6872ef6e',cH: 'I99kSLxXxcUFrAYBKHxDCjW5hJf74MZVSeu082pPwjg-1739819657-1.2.1.1-HEk.Khj8jcu9ksmahlD7l1evyG3i9wdoe.HNbxTyGbvDdchQz5C0zWEap8BBCyA1',cUPMDTk: "\/users\/694774\/articles\/683729\/download_latex?__cf_chl_tk=SEXuiVC79luTAdZb0rg7zoMWhf5tBJjOFVKaKvy83KM-1739819657-1.0.1.1-NsWmSuZ4CyArGFtFPRIz04QMZH.AJ1u0KCSYkRc9wAw",cFPWv: 'g',cITimeS: '1739819657',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/users\/694774\/articles\/683729\/download_latex?__cf_chl_f_tk=SEXuiVC79luTAdZb0rg7zoMWhf5tBJjOFVKaKvy83KM-1739819657-1.0.1.1-NsWmSuZ4CyArGFtFPRIz04QMZH.AJ1u0KCSYkRc9wAw",md: "WJYOb32Vc7oC8qg2SSomqktj48YJgthuaOlbY2Fi6Eo-1739819657-1.2.1.1-DrGG7KcywipwZj4fT5G.NWSSTop5HPbtUcBAbLp5fogqp21M6cJj0tHoueCfQ_YFhlZ4OuWKSMDcg3OL4AdgQEFuTXoDZyQC7p0_EhU36TadGBUn0iZ.S23eZ.yxktODEUoWjrj5OUsltzLpg0CtpQjOOSzDgP1GFmxXPF3O6Kr2v.mfo9.rq.X_4LVA3GLitMAjvkGtmcziuIuQyBsdbYIZ4S4LRa7xYN_1ZasdOq2922R.UZQ00fPNsr4WafqwOddCASEktHYUOUSaQlzy8564vuLDMRoFDWp.rgSnVn5yn0oXA_z.OXpVVH4adS8fpn_w8sn2zu_blNHYAK7ftqFKaTxIMPuDCB01COkLzE5_TzerVZPRHH49689uLzOHDYEhKgvWXbaDTdwscpTlvgS8TkMKNtsPU3wY5PiRjHgQmmFxsEvKuYz8W8mYwEA64Eol2YJGUAk_BS9Qn7xCXBqH4KrqiUlY9nLsIAxlsRiFCAXSu1DKX.eeydu3Klka0U3T4lEO0y.QlMCMeYo24k90e8ERoAnJmTPdLwfX1NfoI_8SeDysZerpCJdJzinmSiPym6UdvZKn2GQWEKHaCxrT1ieSfVBVQknfjm8X7QiPHFZNl4AzAMFl15I.SqpapsPUSlxuDLdxWratv7aUgzw6Qv5jPxlArIrEd3B6ZVs7MK5Nzn.JSqH4ud8smjGA5nD8txGko5RKvJUvtPiNuTwMjU27XnoZjji6NQxm17scbQwjulpV9G9IhKpW2lNP3o10kOGLobRFi.t0LGxPLKJ4rDBq66fc9yT859uKbjg6tGhOBY87oB.mrouDRSwaqD_AIR_eTq0TAsZE3VPWZ6I5s5.N.xb3CXwJ2ZBef3Mys4P3S4ZRg1LG2ACiGCVgM_uc_6WZBWmdDNO_RfGztvNzmjWU9PFC9yp5.x9GbsCZk0vrRmBC2_DDEj5BC_pqC4KS83Fyf_K1NFVdeib60JElwlG8eslx5Zs5GpHxvKXfwjHVKXCF1gA.AUZIvdarcWmEBqy.eJeWED17Hkwpg2dOqbo4twjLVDDHfXEklWINmQU4hLPQSBuBAy95zfE7yNKOYXQmEAs4ll8lZzB4dbLD2Si7_UF99oJIRUKzwe6heMRhSQXHwff2uMAdmujrZjVt5kz93xfp2OyOnWOyMr0BrQfXLPfLdw.QIFqhj98t4LMBYviqsL.Mlp8oQx7waylqStXKvKmaE3vj9LXTEnza4RbFMO3SsvSqoFHwL049Gp_.gowSiE7mhhfiqQ7v6grEyehUf.TW6EBD0_uu07yBwfvltIzSRAKrgXs8l4KcdmP27P9zs7dFCmW8mqlD9igX5ZQAoETNUVlbG1rlbffgzl56PAyevn.vlLMYVisJuc_IS2H8PL49f.rroWDPP3WCZQcJ8TRFCDCi4GnCC8bkLPEjIG4S8ULjW2tI.S9ZdXyh2TCBi3oBfQZFITcncQRV.8f.PJVB7kxQ.QFTUAD4L.yqvt0bnVHOK8B_RX9iaQU27_nMBfJC15hdTOWhHUuJwseNGsuywM.T3EEl74eM.bXsk9hJsBVR3zQrIHWK5_RkoX4BeSI8vte_lssVLccdIad2hrl4wDjBZMa4Lho6azNP1Z0g27Mal009onv16FNW0p3Oi5DMAGAqYTWTM7M_wHO6TTZDXvLFKM9CQyVpTfPDzsQ2eZk8GB_qqypXQLtdLM30WTrjLkKG1tw3we33dT1R3vu3iBKADk9yO_KZtGZ2XGGN5Z4dmRcJS1eZpx6bENfJw6eTS18cvwNgu4IXaNdx1C6fEU1Q.B1ycNJ1S_U1nXjpL2XV.kdCvfflYjoQEhfBFrAQ7YrU10Ae0XzhTnKkKnT4k.742sMOhlx1u7D_ZAqK8auNph1wkbHTfn_P0cXBFsQVIifTLlqspiwXEsxVkrgxfS6k275uxo8Y9pbq02b1tIlc5ftVM1tg3tu9_eYzuKbBzAHP2LOKRcrlXvNZGL6GtUqGATDekpYJovtypjsV9sPrsrbdNsN8tDmt.o3SdK1IPY_0X5R1z7IBcd8ChHEAbVUdTLIrubD72PlfrUra9rCzdnfz8bEk2.u1hOGryEgN8u7gjBrzwzxKlrb_uGvtC72qYeuJJ7iuB0aN_Lntz1DMYUqCJ6vrL8q1Dgt5C9BALlBAvTn.2yR6469ABrEd4vyychisGwi_64PEV.PFxr94bJi2b2amBZesfXv4Jkpet13_x.MbOHwX1exBNxEpSyRlGs5H0dXv4xoB88Wn.J8aYBzCi.MWUPDBAwqhTfD4kKgJcRUvDnWqABcgultYZyKfzsyefI.38bcfiHv7QFsgAJjYmebD_2j.Bf7wOd3xl0K_zD8qeivw8AAiyiANODwxj_qJIBnJkvOSeT94Fmjhlut7dBHJ9cmtCIGajg3SUDMZYdKpfMvSIhIOtF8NymB6eEqEBXr6I1LfBio7ptDGzxlwfSuYyO5ysKuBj2YHBa4oPq1QFD60iOO4Qa.41AFNswX88NxwP5Y3rrxY26VpXxnd0YaBdRw_QcArRmmNEr0dAnLUNddya8RYCm_0LadKpm0qYvSY0w86LoPdxhs5VPZxsgMiU4qctcQp8_sBRfksDqHj2ukzX2.VfZbdlVeRrhMATg",mdrd: "qxxTD7HgncAaNHaKxSMvq8BU1_AyPRhEudMeSWl0mp4-1739819657-1.2.1.1-d_ZgwYqwrkdYx0vayZAOYjcaSAykMqmVq3bqSe5k6Rp3psX0Sl20hFylDyCTyCdst3KVOHjhhkXiWlsUUYTlmUiN5IhEN1g9jk.VAVlnsEEyLPKGNyEo1UG7vQj4buxOasYYcM9APWYqfp5cqcIRQ5Wh670QSNqLclxsvtjZ5c.U4ulhvV1dDNRKUFgnGVmXzIiHvGz2fejYxsPwd9or3nkPMAYu77CQ4GEKzfZebwChbL8YHlrp4heDPWHDMhdXPp.mVlX7V15WXyzTyMiMqmGBEn47tWHczIAoKILIr1XjbYdk9MUYe3HGucYKfnevSBK89mHqvDfd8BvSPrYqZspKfoBs4QHGSWFuK4sYjcpjds9ePwdh6P1uJ9w_j995UucDZ7JK6ao4Bg6u2Xaql0IXETLOBmAf32zASxCh87fdA8_9IRZsIrt9LSOffVcW5TM2LMtQn4lGp2kVawaa9d2DTUQ4PAngiwtePg5ziOa2cNkoLj4yuoRKdvpGFHD_t349V5InVUX2CQ5JzGvoJ48XyqBW76hOmNSuU35cMqzrGh8pxY9VGEvr5GGDbQf_IuOTpj4HsSeBIbj_nOBpf9wgFj3ojr2q_bw17sQRGSiu4CJJhEnAM3nOjtlCzwfSPr40qlfNnk3aLT4C6iOH7I_6e.fk1M3EsPsD2M2N93xUGNQDKK9yo1ETQs6q6jsAxJIzd9s3Lf.QcHc1Ooul.ga1DdmoAB7cvwvw1Nmu38o7tVTkKlmSTxAzZgQ0PUO4zIf9BhShj4wDkkPORiBk5NoUPfaYepb9raFO9QPEo22bYPU2fupSdln7_yjtKeb7IzeNGdfdpH59mXcA4bpRAE42nQkHAgvhNU7cTCcnUkR2.nfmCY9Nwi8m8JPX80d4ICUzuLhAEXInWKamA7YDRDVwVXIbwQ_QO1Nd0mEJCv2Abj.bdLI.dl4J_kNtbg94cW7KPc2iqFODTlLT5iZsd6X9bMn3luy_RdmgBRvbq4TeVbKihZS56GbNsCK08KzJWBHfwQKaP0ApxIMUINlaY0Ma8Ss8xaT7f3ZAdp8FZS54lI86C_FPz17mW2GQQtU_6cBLCfr5cn3eSQMJw9YaUvte6uuD5uJjqV5QSU5h2izb_Wb7rP3PYZxpgQjAlKp6rDDnqavxTynO6eiMb4cLSQP8RnuyYMLiTbGygJ6Iiz2gQGJDClAtc7OEmPQ6GDouqpLM6AH8036f7EputsJb7pE9Y63VDwUOG3UzELTtoLXF2xUkwhXiBTkU1hkZwreHiDAtxh9uxqWRdryoUOZutwWN4sLHyfThIH6vEB3ZgZ7G3o0jeNco4KCOWPPVQ2DMHLT0xkeitBLGkXQ4MW9mHuSfHIZOu7kbZdmAKXwg5HEy2QXHa_7mIbpDyMGQIyQ0kJg_Qnkf4mXXWI8pmhJH4bPi5j4V2yE7i5CoyGN9vPhbKqwH24fwKxiXTtIlRQ5555sUWStAUcgjI1GMdbgebVN6_ZpM3ot1HEAn4jM48ccrQ7QuelBx1Yp8Rnf81kEVowuxYxV17HAySye4ZmGae4lj7yHxvPZxd1BsCxXMNhWU3DKlwKLRdnZnDZ1rySFHQb8c_pQYE6rcN2lD61cNxDDn7Jd4P2Uk1AaVT0IVJqWiYmz.n1D8hfoT7HmwSW9pJxmbzMoJD7l5MiwbXZD0OO2vTPRrIwOtGE38QLi_0SomGOgDjn8UgR_yXjMwKUy_rdNUqqvQCS0NGdriVGHmAgdBVPAtD6xvJNxUHLzu43KcGOdl.boXps3TDDC3Ly0zKcSs5l26J.3EJZCyQMpkmcRimPoR793guiTyli8iIFwOBK9uuuRewPf3fmtwrT85Ygp5f6F61ueI3wmUr2H5rO1YFjV7CFXL8wPA5drOk0kCz0.5qtrijHfiKhCiAr_cjzkm_U.EWr4KAZtboeDPU7w2FGlnDYL6gTz1_JdRZFN2F.x7YTBK57OCywnohIQ2"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9138197d6872ef6e';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, "\/users\/694774\/articles\/683729\/download_latex?__cf_chl_rt_tk=SEXuiVC79luTAdZb0rg7zoMWhf5tBJjOFVKaKvy83KM-1739819657-1.0.1.1-NsWmSuZ4CyArGFtFPRIz04QMZH.AJ1u0KCSYkRc9wAw" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>