ian aar. suswabhavi

ian robertson portius (9 aktoobar 1930-30 janewari 2011) heey liverpool vidyapithatil scottish ganitshastradnya aanee merceside yetheel shikshak hote. teey bhoomiti aanee aadhunik bijganitavaril teen pustakansathi prasiddha aahet. liverpoolmadhye teey aanee pieter giblin heey tyanchya nondanikrut dharmaday "mercesidevaril ganiteey shikshan" sathee olakhale jaatat, jeey varshik spardhechya prayojakatvadvare ganitachya utsahala protsahan dete.
kautumbik aanee prarambhik jeevan.
portiuscha janm 9 aktoobar 1930 roji jhaala. too crossgates, fife aanee kirkaldi, fayafchya hadwayne robertson yaa pratishthit norman walker portius (nantar dharamshastradnya aanee junya kararatil shaikshanik) yanchya sahaa mulanpaiki eka hota. tyanni edinbergmadhil george watson mahavidhyalayat aanee edinberg vidyapithat shikshan ghetale aanee 1952 madhye tyanchi pahili ganiteey padvi prapt kelee. rashtriy sevetil kahee kalanantar tyanni cambridge yetheel triiniity mahavidhyalayat shikshan ghetale. portiusne tyacha prabandh 'bijganitiy bhoomiti' haah doubleuchya khalee lihila.vhee.dii. 1961 madhye cambridge vidyapithat hodge aanee michael atiya.
prarambhik karkird.
portius yanni 1959 madhye liverpool vidyapithat vyakhyate mhanoon adhyapan karnyas suruvat kelee, 1972 madhye varishtha vyakhyate banale. newyorkmadheel kolambiya vidyapithat eka varshat (1961-62) portiyasvar sarge langcha prabhav hota. tyanni vibhedak bhoomititil anek patanvar sanshodhan karane suru thewale.
1971 madhye 'daad normal singularities auph aaa submanifold' haah tyancha lekh 'journal auph differential geometry' madhye prakashit jhaala. too 'aar' aine 'madheel' emm '-manifoldchya gulgulit embeddingshee sambandhit hota.
1969 madhye portiusne vanne nastrand reinhold andd companysah 'topological bhoomiti' prakashit kelee. ganiteey punravlokananmadhye jeey. yanni tyache punaravalokan kele. eals, jyanni tyacha arth amoort bijganit, bhaumitik bijganit aanee euclidean aanee banach jaganmadhil vibhedak ganitachya kramasathi aanee anek patanvar teen-mudatiche pathyapustak mhanoon lavala. eals mhanatat, "nishchitach heey pustak satatyapurn ganiteey sadarikaranachya aanee vidyarthyanchya shaikshanik garja yaa donhi drushtikonatun lakshaniy vichar aanee kaljiche utpadan aahe."1981 madhye cambridge university presseh dusari aavrutti prakashit karnyat aalee.
nantarchi karkird aanee kaam.
1995 madhye iaan portius yanni 'clifford algebras andd daad classical groups' prakashit kele jyacha pieter aar. yanni aadhava ghetala. kayada. stutee kartana, kayada mhanato qee vishayache 'yogya' sadarikaran eka manak nishchit karate jyadvare itarancha nyay keela jaau shakato."yaa pustakat 24 adhyay aahet jyat 8: chaturthansh, 13: shastriy gut, 15: clifford algebra, 16: firki gut, 17: sanyugman, 20: topological spaces, 21: manifolds, 22: khote gut yancha samavesh aahe. prastavnet portius tyachya padvyuttar padvichya vidyarthyachya toney hampsonchya yogdanachi aanee terry wallchya aagami kamachi kabuli deto. chukichya chhap aadhalu shakatat asha duvyache sandarbh pahaa.
bhaumitik vibhedan' (1994) heey pathyapustak vibhedak bhoomiticha aadhunik, prathamik abhyas aahe. vakr aanee prushthbhaganchya buddhimattesathi" heey upashirshak vakranchya vibhedak bhoomitimadhye aanee prushthbhaganchya vibhedak bhoomitimadhye tyachi vyapti darshavate.
dii. chey punaravalokan.aar.jeey. chillingworth mhanatat qee heey "pragat padvipurv kinwa ganitachya prarambhik padvidhar vidyarthyansathi aahe..."chillingworth notes" heey pustakache eka vaishishtyapurn vaishishtya mhanje sankhyatmak vargani vaparoon farak karnyasathi sankshipt sanketank vaparane jyamule gananeche vyavasthit sadarikaran karata yete."udaharanarth, portius phaa dii brunoche sootra dete. yavyatirikt, samikshak nondavato qee yaa ganitache "prakashshastra, gatishastra aanee vastukala tasech (agadi alikade) bhuvidnyan, tomography, sanganakachi drushti aanee chehara olakhanyashi sambandh aahet."
heey anuprayog sampark, nabhiche bindu, kadya, jantu aanee cups yaa siddhantanche anusaran karatat. portiusne ekatmata siddhantabaddal adhik jaanun gheu gheu vachkansathi soochana dilya aahet. yogya antar-varg karyanchya mahattvapoorn binduncha abhyas hii antarnihit sankalpana aahe. dusari aavrutti 2001 madhye prakashit jhaali, jithe lekhak vladimir arnoldchya sambandhit kamacha golakar vakranvar ahwal deu shakala. kharey tarr, portiusne arnoldchya kagadache russianmadhun bhashantar kele hote.
mrutyu aanee varsa.
ganeet shikshanapratichi 'bhavpurn' bandhilaki tyachya 'mercesidevaril ganiteey shikshan' yaa dharmaday sansthechya karyatoon pahili jaau shakate (sandarbh pahaa). aavhanatmak ganeet' yaa pustakat namood kelyapramane, 1978 madhye giblin aanee portius yanni madhyamik shaletil pahilya aanee aanee kramankachya vidyarthyansathi aavhan spardha aayojit karnyas suruvat kelee. 1989 paryant teey darvarshi 3,500 sahbhaginna aakarshit karat hote. vasant rututil kalavadhit hii spardha done aathvadyanchya shevati aayojit karnyat aalee hotee. vidyarthyanni pratyek fereet sahaa prashna vicharat ghetale. liverpool vidyapithachya ganeet vibhagadvare gunankan aayojit kele gele aanee "ganiteey karamanukichya eka sandhyakali" bakshise dilee gelee. nimmya samasya sarvanparyant pohochavanyasathi vyapak sahbhagala protsahan denyat aale. tyanchya pustakat samasyanche nirakaran disate.
ganitachya palikade, portius dongravar chalanyacha anand ghet asey aanee tyachya charchchya gayakvrundat gaat asat. 1974 teey 1978 yaa kalat tyanni liverpool nagarparishadet udarmatvadi nagarsevak mhanoon kaam kele.
30 janewari 2011 roji sanshayaspad hrudayavikarachya zatkyane tyanche achanak nidhan jhaale.

