{"id":96464,"date":"2025-01-18T20:42:43","date_gmt":"2025-01-18T18:42:43","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=96464"},"modified":"2025-02-02T18:00:30","modified_gmt":"2025-02-02T16:00:30","slug":"savantul-roman-octav-onicescu-un-matematician-de-geniu-el-s-a-preocupat-de-teoria-relativitatii-inventand-mecanica-invariantiva","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/savantul-roman-octav-onicescu-un-matematician-de-geniu-el-s-a-preocupat-de-teoria-relativitatii-inventand-mecanica-invariantiva\/","title":{"rendered":"Savantul rom\u00e2n Octav Onicescu, un matematician de geniu. El s-a preocupat de teoria relativit\u0103\u021bii, invent\u00e2nd &#8222;mecanic\u0103 invariantiv\u0103&#8221;"},"content":{"rendered":"<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Octav-Onicescu.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-96465\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Octav-Onicescu.jpg\" alt=\"\" width=\"356\" height=\"310\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Octav-Onicescu.jpg 537w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/01\/Octav-Onicescu-300x261.jpg 300w\" sizes=\"auto, (max-width: 356px) 100vw, 356px\" \/><\/a>\u00cemplinise v\u00e2rsta de 90 de ani \u0219i era decanul incontestat al matematicienilor rom\u00e2ni, c\u00e2nd, \u00eent\u00e2lnindu-se cu un grup de pionieri, savantul <strong>Octav Onicescu<\/strong> (1892-1983) le declara: <em>&#8222;S\u0103 nu uit\u0103m c\u0103 matematica este unul din marii educatori ai g\u00e2ndirii noastre. Ea te \u00eenva\u021b\u0103 s\u0103 anticipezi o situa\u021bie de via\u021b\u0103 \u0219i, \u00eentocmai ca \u00eentr-o problem\u0103, s\u0103 \u021bii seama de to\u021bi factorii, s\u0103-i analizezi, s\u0103-i compari, astfel \u00eenc\u00e2t s\u0103 po\u021bi lua cea mai bun\u0103 decizie&#8221;<\/em>. Chiar \u0219i din acest scurt fragment al g\u00e2ndirii savantului, r\u0103zbate preocuparea sa permanent\u0103 de a \u00eembina matematica cu via\u021ba &#8211; \u0219i cei care \u00eei cerceteaz\u0103 opera descoper\u0103 nenum\u0103rate fa\u021bete ale acestei preocup\u0103ri: istoria g\u00e2ndirii umane, istoria matematicii, crearea, la noi \u00een \u021bar\u0103, a unei puternice \u0219coli de calculul probabilit\u0103\u021bilor \u0219i statistic\u0103, deschiderea unor drumuri noi \u00een \u0219tiin\u021b\u0103.<\/p>\n<p>N\u0103scut la 20 august 1892, \u00een comuna \u0218tef\u0103ne\u0219ti, jude\u021bul Boto\u0219ani, Octav absolv\u0103 liceul <em>&#8222;August Treboniu Laurian&#8221; <\/em>din Boto\u0219ani cu media maxim\u0103. Se \u00eenscrie la Universitatea din Bucure\u015fti \u00een anul 1911, urm\u00e2nd, \u00een paralel, cursurile facult\u0103\u021bilor de matematic\u0103 \u0219i de filozofie, ob\u021bin\u00e2nd, la ambele, licen\u021ba numai \u00een doi ani. Dup\u0103 ce este combatant activ pe front \u00een R\u0103zboiul din 1916-1918, urmeaz\u0103 cursuri de specializare \u00een Italia \u0219i Fran\u021ba. \u00cen 1920 ob\u021bine titlul de doctor \u00een matematic\u0103. Teza sa de doctorat trata un subiect de teoria relativit\u0103\u021bii &#8211; problem\u0103 \u0219tiin\u021bific\u0103 de mare actualitate \u00een acel moment. Este numit conferen\u021biar de mecanic\u0103 la Facultatea de \u0218tiin\u021be a Universit\u0103\u021bii din Bucure\u0219ti, institu\u021bie la care func\u021bioneaz\u0103, p\u00e2n\u0103 la sf\u00e2r\u0219itul vie\u021bii, ca profesor.<\/p>\n<p>Aici, \u00een 1925, pred\u0103 primul curs din Rom\u00e2nia de calculul probabilit\u0103\u021bilor, \u021bin\u00e2nd \u00eens\u0103 \u0219i alte cursuri: calculul diferen\u021bial absolut (\u00een leg\u0103tur\u0103 cu teoria relativit\u0103\u021bii), statistic\u0103, teoria poten\u021bialului, ca \u0219i din alte domenii de actualitate ale matematicii. \u00cen 1930 organizeaz\u0103 \u0219i conduce <em>\u0218coala de Statistic\u0103, actuariat \u0219i calcul<\/em> de pe l\u00e2ng\u0103 Universitatea din Bucure\u0219ti. \u00cen paralel, a fost profesor de <em>&#8222;Mecanica aparatelor \u0219i mi\u0219c\u0103rilor&#8221;<\/em> la Institutul Na\u021bional de Educa\u021bie Fizic\u0103. Este co-autor al primului tratat modern de algebr\u0103 ap\u0103rut la noi \u00een \u021bar\u0103.<\/p>\n<p>Meritele \u0219tiin\u021bifice ale savantului Onicescu sunt multiple. El este unul din creatorii (\u00eempreun\u0103 cu Gh. Mihoc) al no\u021biunii importante de lan\u021b probabilistic cu leg\u0103turi complete. A propus no\u021biuni \u0219tiin\u021bifice noi, cum ar fi <em>&#8222;m\u0103sura Onicescu&#8221;<\/em> pentru cantitatea de informa\u021bie, numit\u0103 \u0219i energie informa\u021bional\u0103. Preocupat \u00een permanen\u021b\u0103 de problemele filozofiei \u0219tiin\u021bei, a condus, timp de mul\u021bi ani, un seminar dedicat acestor probleme, ca \u0219i un seminar de calculul probabilit\u0103\u021bilor. \u00cen afara studiilor strict \u0219tiin\u021bifice, a publicat studii privind figuri de seam\u0103 ale \u0219tiin\u021bei, biografii de oameni de \u0219tiin\u021b\u0103 \u0219i alte lucr\u0103ri.<\/p>\n<p>Dup\u0103 ce \u00een tinere\u021be s-a preocupat de teoria relativit\u0103\u021bii, ulterior a \u00eencercat s\u0103 elaboreze o mecanic\u0103 \u00een care s\u0103 nu mai apar\u0103 unele dificult\u0103\u021bi rezult\u00e2nd din mecanica relativist\u0103. Mecanica sa se nume\u0219te <em>&#8222;mecanic\u0103 invariantiv\u0103&#8221;<\/em>, deoarece postuleaz\u0103 c\u0103 \u00een studiul mecanicii trebuie s\u0103 se plece de la un anume invariant. Cercet\u0103rile sale, mai ales cele privind lan\u021burile cu leg\u0103turi complete, s-au dovedit a fi deosebit de fructuoase, permi\u021b\u00e2nd \u00een\u021belegerea unor fenomene complexe, cum ar fi, de exemplu, \u00eenv\u0103\u021barea. O carte publicat\u0103 pe aceast\u0103 tem\u0103 poart\u0103 numele de <em><strong>&#8222;Mecanica invariantiva si cosmologia&#8221;<\/strong><\/em>.<\/p>\n<p>Savant complet, ce aminte\u0219te prin forma\u021bia sa multipl\u0103 pe oamenii Rena\u0219terii, Octav Onicescu s-a bucurat de recunoa\u0219terea meritelor sale \u0219tiin\u021bifice, at\u00e2t \u00een \u021bar\u0103 c\u00e2t \u0219i \u00een str\u0103in\u0103tate, fiind membru al Academiei Rom\u00e2ne, membru de onoare al Institutului Interna\u021bional de \u0218tiin\u021be Mecanice de la Udine din Italia etc. D\u00e2nd dovad\u0103 de valen\u021be multiple, a publicat \u0219i dou\u0103 volume de <em><strong>&#8222;Memorii&#8221;<\/strong><\/em> (1982, 1984).<\/p>\n<p>E interesant s\u0103 ar\u0103t\u0103m cum se vedea pe sine \u00eensu\u0219i savantul Onicescu: <em>&#8222;Eu nu sunt \u00een primul r\u00e2nd un matematician, necum probabilist, cum mi se spune de preferin\u021b\u0103, sau un mecanician, cum vor unii s\u0103 m\u0103 considere. Eu \u00eensumi m\u0103 privesc ca un cercet\u0103tor de fapte umane, sociale sau economice, de fenomene naturale, cu mijloace matematice&#8221;.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00cemplinise v\u00e2rsta de 90 de ani \u0219i era decanul incontestat al matematicienilor rom\u00e2ni, c\u00e2nd, \u00eent\u00e2lnindu-se cu un grup de pionieri, savantul Octav Onicescu (1892-1983) le declara: &#8222;S\u0103 nu uit\u0103m c\u0103 matematica este unul din marii educatori ai g\u00e2ndirii noastre. Ea &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Savantul rom\u00e2n Octav Onicescu, un matematician de geniu. 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El s-a preocupat de teoria relativit\u0103\u021bii, invent\u00e2nd &#8222;mecanic\u0103 invariantiv\u0103&#8221;\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":96465,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19734],"tags":[5641,10564,827,1103,3515,202,86,1722,679,19713,19712,13810,2478,19736,13908,1104],"class_list":["post-96464","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-romani-celebri","tag-academia-romana","tag-botosani","tag-bucuresti","tag-carte","tag-filozofie","tag-franta","tag-italia","tag-matematica","tag-matematician","tag-mecanica-relativista","tag-octav-onicescu","tag-probabilitate","tag-profesor","tag-romani-celebri","tag-statistica","tag-teoria-relativitatii","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>Savantul rom\u00e2n Octav Onicescu, un matematician de geniu. 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