{"id":96439,"date":"2025-01-15T20:33:34","date_gmt":"2025-01-15T18:33:34","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=96439"},"modified":"2025-01-15T20:33:34","modified_gmt":"2025-01-15T18:33:34","slug":"traian-lalescu-matematicianul-roman-care-a-publicat-prima-monografie-din-lume-dedicata-ecuatiilor-integrale-1911","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/traian-lalescu-matematicianul-roman-care-a-publicat-prima-monografie-din-lume-dedicata-ecuatiilor-integrale-1911\/","title":{"rendered":"Traian Lalescu &#8211; matematicianul rom\u00e2n care a publicat prima monografie din lume dedicat\u0103 ecua\u021biilor integrale (1911)"},"content":{"rendered":"<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Traian-Lalescu.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft  wp-image-96440\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Traian-Lalescu.jpg\" alt=\"\" width=\"347\" height=\"262\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Traian-Lalescu.jpg 543w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Traian-Lalescu-300x227.jpg 300w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Traian-Lalescu-200x150.jpg 200w\" sizes=\"auto, (max-width: 347px) 100vw, 347px\" \/><\/a>Ca orice \u0219tiin\u021b\u0103, matematica se dezvolt\u0103 \u00een permanen\u021b\u0103, dar cunoa\u0219te anumite perioade \u00een care aceast\u0103 dezvoltare este mai vijelioas\u0103. O astfel de perioad\u0103 a fost \u0219i sf\u00e2r\u0219itul secolului XIX, c\u00e2nd apar discipline noi, ca, de exemplu, teoria ecua\u021biilor integrale. Iar prima monografie din lume care a fost dedicat\u0103 acestui domeniu se datoreaz\u0103 matematicianului rom\u00e2n <strong>Traian Lalescu<\/strong> (1882-1929).<\/p>\n<p>Traian Lalescu provenea dintr-o familie originar\u0103 din Banat, zon\u0103 cu care marele matematician a r\u0103mas \u00een permanent\u0103 leg\u0103tur\u0103, de-a lungul \u00eentregii sale vie\u021bi. S-a n\u0103scut la Bucure\u0219ti, dar studiile liceale le urmeaz\u0103 \u00een diferite ora\u0219e &#8211; Craiova, Roman \u0219i Ia\u0219i &#8211; fiind premiantul I \u00een toate clasele. De mic este atras de matematic\u0103, colabor\u00e2nd la <strong><em>&#8222;Gazeta matematic\u0103&#8221;<\/em><\/strong>. Reu\u0219e\u0219te primul, cu nota maxim\u0103 posibil\u0103, la \u0218coala Na\u021bional\u0103 de Poduri \u0219i \u0218osele din Bucure\u0219ti \u0219i urmeaz\u0103 timp de trei ani cursurile acestei \u0219coli. Fiind \u00eens\u0103 atras irezistibil de matematic\u0103, se retrage de la cursurile de ingineri \u0219i se \u00eenscrie la Sec\u021bia de Matematic\u0103 a Facult\u0103\u021bii de \u0218tiin\u021be a Universit\u0103\u021bii din Bucure\u0219ti, ob\u021bin\u00e2nd licen\u021ba \u00een numai doi ani (1903-1905).<\/p>\n<p>Dup\u0103 ce activeaz\u0103 un timp ca profesor \u00een \u00eenv\u0103\u021b\u0103m\u00e2ntul mediu, pleac\u0103 pentru specializare la Paris, ca bursier. Aici trece din nou examenele de licen\u021b\u0103 \u0219i \u00een anul 1908 devine doctor al Sorbonei, cu o tez\u0103 ce trata problema noilor ecua\u021bii integrale. \u00cen anul 1911, Traian public\u0103 prima monografie din lume dedicat\u0103 ecua\u021biilor integrale, monografie \u00een care expune \u0219i rezultatele sale personale. Monografia, ap\u0103rut\u0103 mai \u00eent\u00e2i la Bucure\u0219ti, este tradus\u0103 \u00een anul urm\u0103tor \u00een limba francez\u0103, ap\u0103r\u00e2nd la Paris, cu o prefa\u021b\u0103 datorat\u0103 marelui matematician E. Picard.<\/p>\n<p>Traian Lalescu a avut \u0219i o intens\u0103 activitate social-politic\u0103. \u00cen anii 1918-1919, a ac\u021bionat sus\u021binut la Paris, pentru unirea tuturor rom\u00e2nilor. Dar activitatea sa este, \u00een primul r\u00e2nd, dedicat\u0103 matematicii. Dup\u0103 o perioad\u0103 \u00een care func\u021bioneaz\u0103 \u00een \u00eenv\u0103\u021b\u0103m\u00e2ntul mediu la Giurgiu \u0219i Bucure\u0219ti (1906-1912), intr\u0103 ca asistent la \u0218coala Na\u021bional\u0103 de Poduri \u0219i \u0218osele, func\u021bion\u00e2nd simultan \u0219i la Facultatea de \u0218tiin\u021be din Bucure\u0219ti, unde pred\u0103 primul curs de ecua\u021bii integrale din \u00eenv\u0103\u021b\u0103m\u00e2ntul superior rom\u00e2nesc.<\/p>\n<p>Inteligen\u021ba sa sc\u0103p\u0103r\u0103toare era mereu \u00een c\u0103utarea noului \u00een \u0219tiin\u021b\u0103, urm\u0103rind \u0219i legarea matematicii de multiple aspecte ale practicii. Tocmai de aceea, dup\u0103 ce urmeaz\u0103 \u00een 1915 un curs de electricitate \u0219i electrotehnic\u0103 \u00een \u021bar\u0103, la \u0218coala Na\u021bional\u0103 de Poduri \u0219i \u0218osele, audiaz\u0103 \u0219i cursurile \u0218colii Superioare de Electricitate de la Paris (1918-1919), ob\u021bin\u00e2nd titlul de inginer. Revenit \u00een \u021bar\u0103, ia parte activ\u0103 la reorganizarea \u00eenv\u0103\u021b\u0103m\u00e2ntului superior \u00een perioada imediat urm\u0103toare primului r\u0103zboi mondial, ca \u0219i la introducerea unor cursuri noi. Astfel, chiar el pred\u0103, pe r\u00e2nd, cursuri de algebr\u0103 superioar\u0103, mecanic\u0103 ra\u021bional\u0103, geometrie analitic\u0103, calcul tensorial, teoria numerelor.<\/p>\n<p>La insisten\u021ba sa, se \u00eenfiin\u021beaz\u0103 \u0218coala Politehnic\u0103 din Timi\u0219oara (1920), el fiind primul rector al acestei prestigioase institu\u021bii de \u00eenv\u0103\u021b\u0103m\u00e2nt superior. Tot la Timi\u0219oara, \u00eenfiin\u021beaz\u0103 o revist\u0103 de matematic\u0103. \u00cen afar\u0103 de contribu\u021biile matematice amintite, Traian Lalescu este autorul unei interesante monografii intitulate<strong><em> &#8222;Geometria triunghiului&#8221;<\/em><\/strong>. Tot lui i se datoreaz\u0103 \u0219i unele studii originale privind a\u0219a-numitele func\u021bii spline (de tip polinom), ca \u0219i cercet\u0103ri de fizic\u0103 matematic\u0103. De asemenea, Lalescu a l\u0103sat \u00een urma sa numeroase lucr\u0103ri privind istoria matematicii \u00een Rom\u00e2nia. Dac\u0103 moartea nu l-ar fi r\u0103pit \u00een plin\u0103 putere de crea\u021bie, la mai pu\u021bin de cinci decenii de via\u021b\u0103, opera sa ar fi fost desigur \u0219i mai bogat\u0103.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ca orice \u0219tiin\u021b\u0103, matematica se dezvolt\u0103 \u00een permanen\u021b\u0103, dar cunoa\u0219te anumite perioade \u00een care aceast\u0103 dezvoltare este mai vijelioas\u0103. O astfel de perioad\u0103 a fost \u0219i sf\u00e2r\u0219itul secolului XIX, c\u00e2nd apar discipline noi, ca, de exemplu, teoria ecua\u021biilor integrale. Iar &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Traian Lalescu &#8211; matematicianul rom\u00e2n care a publicat prima monografie din lume dedicat\u0103 ecua\u021biilor integrale (1911)\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/traian-lalescu-matematicianul-roman-care-a-publicat-prima-monografie-din-lume-dedicata-ecuatiilor-integrale-1911\/#more-96439\" aria-label=\"Cite\u0219te mai multe despre Traian Lalescu &#8211; matematicianul rom\u00e2n care a publicat prima monografie din lume dedicat\u0103 ecua\u021biilor integrale (1911)\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":96440,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[106],"tags":[10062,827,3268,1751,329,1722,679,10516,836,19710,1220,432,74,11738,9803,2707,19709],"class_list":["post-96439","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stiinta","tag-algebra","tag-bucuresti","tag-craiova","tag-geometrie","tag-iasi","tag-matematica","tag-matematician","tag-numere","tag-paris","tag-picard","tag-primul-razboi-mondial","tag-roman","tag-romania","tag-sorbona","tag-stiinta","tag-timisoara","tag-traian-lalescu","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Traian Lalescu - matematicianul rom\u00e2n care a publicat prima monografie din lume dedicat\u0103 ecua\u021biilor integrale (1911) - Secretele lui Lovendal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lovendal.ro\/wp52\/traian-lalescu-matematicianul-roman-care-a-publicat-prima-monografie-din-lume-dedicata-ecuatiilor-integrale-1911\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Traian Lalescu - matematicianul rom\u00e2n care a publicat prima monografie din lume dedicat\u0103 ecua\u021biilor integrale (1911)\" \/>\n<meta property=\"og:description\" content=\"Ca orice \u0219tiin\u021b\u0103, matematica se dezvolt\u0103 \u00een permanen\u021b\u0103, dar cunoa\u0219te anumite perioade \u00een care aceast\u0103 dezvoltare este mai vijelioas\u0103. 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O astfel de perioad\u0103 a fost \u0219i sf\u00e2r\u0219itul secolului XIX, c\u00e2nd apar discipline noi, ca, de exemplu, teoria ecua\u021biilor integrale. Iar ... 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