
tantrasangrah

tantrasangrah kinwa tantrasangrah (shabdasha, "pranaliche sankalan") haah keralchya khagolshastra aanee ganitachya shakheshi sambandhit khagolshastradnya/ganitshastradnya nilkanth somayaji yanni lihilela eka mahattvacha khagolshastriy grunth aahe. 
haah grunth ii. sha. 1501 madhye purn jhaala. tyat sanskratmadhil 432 shlok aahet, jeey aath adhyayanmadhye vibhagale aahet. tantrasangrahane kahee bhashyanna janm deela hotah adnyat lekhakache 'tantrasangrah-vyakhya' aanee sumare ii. sha. 1550 madhye jyashthadevane lihilele 'yuktibhasha'.
tantrasangrah, tyachya bhashanansah, khagolshastra aanee ganitachya keral shaletil ganiteey kamgirichi sakholata, visheshtah shaletil ullekhaneey ganitachya sangamagram madhav yanchya kamgirichi mahitee samore aanato. 
tyachya 'tantrasangrah' madhye, nilkanthane paaraa aanee shukra grahansathi aaryabhatchya pratimanat sudharana kelee. 17 vya shatkat johann keplarchya kalaparyant yaa grahanchya kendrache tyache samikaran sarvat achook rahile.
see. hota.emm. vhish, east india companyche nagri sevak, jyanni 1835 madhye prakashit jhalelya eka pepardware pashchatya vidvattechya nidarshanas tantrasangrahache astitva aanale. see. yanni namood keleli itar pustake.emm. tyachya peparmadhye, jyashthadevache yuktibhasha, puthumna somayajiche karanpaddhati aanee shankarvarmanche sadratnamala heey vishay hote.
tantrasangrahcha lekhak aanee tarikh.
tantrasangrahache lekhak, nilkanth somayaji heey gargya gotratil eka nambudiri hote aanee madhya keralmadhil tirurjavalil trikantiyurche rahivasi hote. tyachya illamche naav kelallur hote. tyane parameshwarcha mulga damodar yachya margdarshanakhali shikshan ghetale. tantrasangrahatil pahilya aanee shevatchya shlokanmadhye pustakachya prarambhachya aanee purn honyachya tarkha, kaalee divasanchya swarupat nirdisht karnare kalkram aahet. heey 1500-01 madhye tarakhanparyant karya karatat.
pustakacha saransh.
tantrasangrahatil majkuracha sankshipt tapasheel khalee sadar keela aahe. tyateel majkuracha varnanatmak tapasheel bharatiy vidnyan/shastradharamadhye upalabdh aahe. indian journal auph histree auph science' madhye prakashit tantrasangrahchya aavruttit yaa vishayancha sampoorn tapasheel upalabdh aahe.
tantrasangrahachi kahee ullekhaneey vaishishtye.
"bharatiy golakar khagolshastriy dnyanache ullekhaneey sanshleshan tantrasangrahatil eka parichhedat aadhalate." 
khagolshastrat, shikhar, aakashiy uttar dhruv aanee surya yanni tayar kelelya golakar trikonala "khagolshastriy trikon" mhanatat. tyachya bajoo aanee tyache done coone heey mahattvapoorn khagolshastriy praman aahet. bajoo 90°-φ aahet jethe φ heey nirikshakache sthaliy akshansh aahe, 90°-δ jethe δ heey suryache avakshepan aahe aanee 90°-a "jethe" a "hii kshitijachya varr suryachi unchi aahe. mahattvache coone mhanje sooryacha azimuth asalelya shikharavaril coone aanee uttar dhruvavaril coone joou sooryacha taas coone aahe. itar teen ghatak nirdisht kelyavar yapaiki done ghatakanchi ganana karane hii samasya aahe. tantotant daha vegvegalya shakyata aahet aanee tantrasangrahat yaa serve shakyatanchi charcha, eka eka karoon 'ekach thikani' purn upayansah kelee jaate. "konatyahi aadhunik pathyapustakapramane yethe golakar trikon paddhatshirpane hatalala jaato."
nirikshakachya sthitiche sthaliy akshansh heey vishuvavruttiy divashi duparchya velee suryachya shikhar antarachya barobariche asate. surya paraloxcha shikharavaril antaravaril parinam bharatiy khagolshastradnyanna aaryabhattapasunach maheet hota. parantu nilkantha somayaji yannich pratham nirikshakachya akshanshavar saur paraloxchya prabhavavar charcha kelee. tantrasangrah yaa durustichi tivrata aanee suryachya maryadit aakaramule sudharana dekhil deto.
tantrasangrahamadhye paaraa aanee shukra yaa aateel grahansathichya junya bharatiy grahanchya namunyachi eka mothee sudharana aahe aanee khagolshastrachya itihasat, yaa grahanchya kendrachya samikaranache pahile achook sootra aahe. tyachi grahiy pranali anshatah suryakendrit pratikruti hotee jyamadhye paaraa, shukra, mangal, jupiter aanee shanee suryachi pradakshina karatat, jeey pruthvibhovati pradakshina ghalatat, nantar 16 vya shatkachya uttaradhat tyco brahene prastavit kelelya tyconic pranalipramanech. nantarchya tyconic aanee copernican modelspeksha aateel suryakendriy halchalincha andaj lavnyat nilkanthachi pranali adhik achook hotee aanee 17 vya shatkaparyant sarvat achook rahili jevha johannes keplarne aateel grahanchya gananet agadi nilakanthapramanech sudharana kelee. keralchya jyaa khagolshastradnyanni tyanche anusaran kele tyanni tyanche grahiy pratirup sweekarle.
tantrasangrahala 500 varshe purn hott asatanachi parishad.
madras vidyapithachya saiddhantik bhautikshastra vibhagane indian institute auph advanced studdy, shimalachya aantar-vidyapith kendrachya sahkaryane, tantrik sangrahacha 500 vaa vardhapan deane sajra karnyasathi chennai yethe march 2000 madhye eka parishad aayojit kelee hotee. 
keral shalechya ganeet aanee khagolshastratil kamgiri aanee yaa abhyasatoon udayala yet asalelya vidnyanachya itihasatil naveen drushtikonanvaril alikadil karyavar prakash taknyasathi aanee tyanche punaravalokan karnyasathi hii parishad eka mahattvachi sandhee tharali. yaa parishadet sadar kelelya mahattvachya kagadpatranche sankalanahi prakashit karnyat aale aahe.
tyach lekhakachi itar kaame.
khalilpramane nilkanth somayaji yanchya itar kamanche sankshipt varnan aahe.