81. Notazioni Translate this page Il simbolo dell’arco appare in una traduzione del Liber embadorum di savasorda,ad opera di Platone da Tivoli nella metà del XII secolo. Parallelo // http://xoomer.virgilio.it/mathontheweb/curiosita3.htm

Questa pagina è stata aggiornata il La maggior parte delle notizie sono tratte da History of mathematical notations di Florian Cajori. Algebra Aleph zero Proposto da Cantor nel 1895, come indicatore della cardinalità dei naturali. Coefficiente binomiale Eulero, in un articolo del 1778, pubblicato nel 1806, usa un simbolo simbolo a quello moderno, solo che inserisce una barra fra i due numeri. Determinante Le attuali notazioni sono dovute a Cayley, che le propone nel 1841. Fattoriale Tale Christian Kramp propone il simbolo con il punto esclamativo, nel 1808. Logaritmo Keplero nel 1624 usa la contrazione Log; Peano invece scirve log per il logaritmo naturale, Log per quello decimale. N Eulero lo usa in un manoscritto del 1727 o 1728, ma viene pubblicato solo nel 1862. Pigreco Solo nel 1706 William Jones usa questo simbolo per indicare il rapporto fra circonferenza e diametro. Eulero poi la diffonde, usandola a partire dal 1736. Unità immaginaria Eulero scrive i in una memoria del 1777, pubblicata nel 1794.

82. Page4 à Archimède, Héron, savasorda, ainsi qu au livre des Trium Fratorum . http://www.ac-orleans-tours.fr/maths-1/rallye/dossiers99/lbfo9/page4.htm

Lycée Benjamin Franklin Orléans c) PRACTICA GEOMETRIE Cet ouvrage de 223 pages s'appuie sur les Eléments d'Euclide avec également certaines parties empruntées à Archimède, Héron, Savasorda, ainsi qu'au livre des " Trium Fratorum ". Les sources de Léonard étaient donc essentiellement grecques. Tout d'abord, Fibonacci explique, complète et applique les Eléments d'Euclide. Ces explications constituent un préambule et introduisent des notions algébriques nécessaires à la résolution des problèmes. De plus, la valeur de p p est égal à 3,141818, ce qui est remarquable ! Dans le chapitre IV ( distinctio quarta Sur la division des figures En conclusion de la Practica geometrie + 5 = z EXTRAIT DE LA PREMIERE PAGE de la Practica geometrie dont Boncompagni a tiré son édition au XIX ème haut de page sommaire dossiers page précédente page suivante

83. Quadratic Formula Abraham bar Hiyya HaNasi (also known by the Latin name savasorda) was the firstto introduce the complete solution to Europe in his book Liber embadorum. http://www.fact-index.com/q/qu/quadratic_formula.html

Main Page See live article Alphabetical index Quadratic formula The quadratic formula explicitly gives the solutions x to the quadratic equation in terms of the coefficients a b and c , which we temporarialy assume to be real (but see below for generalizations) with a being non-zero. These solutions are also called the roots of the equation. The formula reads The term b ac is called the discriminant of the quadratic equation, because it discriminates between three qualitatively different cases: If the discriminant is zero then there is a repeated solution x , and this solution is real. Geometrically, this means that the parabola described by the quadratic equation touches the x -axis in a single point. If the discriminant is positive, then there are two different solutions x , both of which are real. Geometrically, this means that the parabola intersects the x -axis in two points. Furthermore, if the discriminant is a perfect square, the roots are rational numbers in other cases they may be quadratic irrationals. If the discriminant is negative, then there are two different solutions

84. Abraham Bar Hiyya Ha-Nasi - Wikipedia, The Free Encyclopedia Hiyya the Prince/President) (1070 1136) was a Spanish Jewish mathematicianand astronomer, also known as savasorda (from the Arabic Sâhib as-Shurta). http://en.wikipedia.org/wiki/Abraham_bar_Hiyya_Ha-Nasi

Wikimedia needs your help in the final days of its fund drive. See our fundraising page The Red Cross and other charities also need your help. Abraham bar Hiyya Ha-Nasi From Wikipedia, the free encyclopedia. Abraham bar Hiyya Ha-Nasi Abraham son of [Rabbi] Hiyya the Prince/President ) was a Spanish Jewish mathematician and astronomer , also known as Savasorda (from the Arabic S¢hib as-Shurta He lived in Barcelona ; and is remembered in the world of mathematics, for his role in the dissemination of the quadratic equation . Bar Hiyya wrote several scientific works in the fields of astronomy , mathematics, land surveying and calendar calculations He also wrote two religious works in the field of Judaism and the Hebrew Bible Hegyon ha-Nefesh ("Contemplation of [the] Soul") on repentance and Megillat ha-Megalleh on the redemption of the Jewish people. Even these religious works contain scientific and philosophical speculation. Bar Hiyya wrote all his works in Hebrew , not in Judaeo-Arabic of the earlier Jewish scientific literature, which makes him a pioneer in the use of the Hebrew language for scientific purposes. He also co-operated with

85. Wiki/Savasorda - Wikipedia, The Free Encyclopedia Astrologie Stratégies autour de l’astrologie la question et Translate this page On pense notamment à un Abraham Bar Hiyya (savasorda) dit Le Prince, juif deBarcelone, mort vers 1136 et qui avait, assez vainement, désigné, reprenant les http://en.wikipedia.org/wiki/wiki/Savasorda

Wikimedia needs your help in the final days of its fund drive. See our fundraising page The Red Cross and other charities also need your help. Wiki/Savasorda From Wikipedia, the free encyclopedia. Wikipedia does not have an article with this exact name. Start the Wiki/Savasorda article Search for Wiki/Savasorda in other articles. Look for Wiki/Savasorda in Wiktionary, our sister dictionary project. Look for Wiki/Savasorda in the Commons, our repository for free images, music, sound, and video. Look for pages linking to this page If you have created this page in the past few minutes and it has not yet appeared, it may not be visible due to a delay in updating the database. Try purge , otherwise please wait and check again later before attempting to recreate the page. If you created an article under this title previously, it may have been deleted. See candidates for speedy deletion for possible reasons. Retrieved from " http://en.wikipedia.org/wiki/Wiki/Savasorda Views Article Discussion Edit this page Personal tools Create account / log in Navigation Main Page Community portal Current events Recent changes ... Donations Search Toolbox What links here Related changes Upload file Special pages ... About Wikipedia

86. Almanac.1521-4-2000 Translate this page Intorno al 1100, il matematico ebreo di Barcellona, Abraham bar-Hiyya ha-Nasi,noto anche come savasorda, inizia a tradurre alcuni trattati scientifici http://web.genie.it/utenti/e/enigmagalgano/almanacco_XII_secolo/1100-2000/almana

San Galgano Almanacco del XII secolo 15 - 21 aprile 2000 15 - 21 aprile 1100 Il nostro calendario del Duemila, con le vicende di 900 anni fa. Una macchina del tempo dal 12 al 21 secolo. Sabato Intorno al 1100, Adelardo di Bath compone la su aprima opera intitolata De eodem er diverso Sonetti di Folgore da San Giminiano Domenica Nicola Abbagnano - Storia della filosofia (la filosofia medievale) - TEA Sonetti dei "Mesi" XVIII D'aprile D'april vi dono la gentil campagna tutta fiorita di bell'erba fresca; fontane d'acqua, che non vi rincresca, donne e donzelle per vostra compagna ambianti palafren, destrier di Spagna, e gente costumata alla francesca cantar, danzar alla provenzalesca con istormenti nuovi d'Alemagna. E d'intorno vi sian molti giardini, e giacchito vi sia ogni persona; ciascun con reverenza adori e 'nchini a quel gentil, c'ho dato la corona c'ha 'l Presto Gianni o 'l re di Babilona. Robert Delort - La vita quotidiana nel Medioevo - Laterza Roberto Donati - Castelli del Trentino e Alto Adige - Publigraf Intorno al 1100, il matematico ebreo di Barcellona, Abraham bar-Hiyya ha-Nasi, noto anche come Savasorda, inizia a tradurre alcuni trattati scientifici arabi in ebraico.

87. Leonardo Proportion Bibliography 5862 Of 19921 Items, 6 Sept Translate this page Paolo y 1982 t Leonardo, Pacioli e savasorda j Leonardo dopo Milano g 87-91n 9419 a Galluzzi, Paolo y 1987 t The career of a technologist j Leonardo da http://www.wolfson.ox.ac.uk/~mhl/LeoBib5862GtoL.txt

88. Z Historie Matematiky A Fyziky (2) Zpracovali Jirí Svršek, Roman Abraham bar Hiyya HaNasi, vetšinou uvádený pod latinským jménem savasorda, napsalv roce 1145 knihu Liber embadorum , která byla první prací v Evrope http://natura.baf.cz/natura/2001/7/20010705.html

Z historie matematiky a fyziky (2) zpracovali: Jiøí Svršek, Roman Bartoš Typografické poznámky k matematickým vztahùm jsou uvedeny na konci tohoto textu. 4. Historie èísla p Ve Starém zákonì v Bibli lze nalézt zmínky, napøíklad pøi popisu velkého chrámu krále Šalamouna postaveného kolem roku 850 pø.n.l, z nichž vyplývá, že èíslo p bylo odhadováno èíslem 3. Egypané a obyvatelé Mezopotámie odhadovali èíslo p hodnotou 25/8 a (10). Na obranu Šalamounových øemeslníkù je tøeba uvést, že pøi stavbì chrámu byly používány velké kvádry kamene, pøi jejichž usazování na místo nebyla nutná velká pøesnost. Skuteènost, že pomìr délky kružnice k jejímu polomìru je konstantní, byla známa velmi dlouho. První odhady èísla p byly získány mìøením, jako v pøípadì "biblické" hodnoty 3. V egyptském papyru, který objevil A. Henry Rhind je odhad èísla p dán èíslem 4.(8/9) První teoretický výpoèet èísla pí pochází od Archiméda ze Syrakus (287 - 212 pø.n.l.). Archimédes získal odhad p Archimédes vìdìl, že èíslo pí není rovno 22/7 a netvrdil, že objevil pøesnou hodnotu. Jeho nejlepším odhadem je 3.1418, jehož chyba je asi 0.0002. Archimédes pro odhad èísla p použil metodu vepsaných a opsaných mnohoúhelníkù kružnici s jednotkovým polomìrem. Nalezl vztahy pro odhad èísla pí pomocí obvodù tìchto mnohoúhelníkù a nalezl iteraèní vztahy mezi obvody n-úhelníkù a (n+1)-úhelníkù.

89. »Ê¤å¡þ¼Ð°O referring to a geometry book by Abraham bar Hiyya savasorda in library of SanMarco, Florence;?Thomas Lawrence?L.2445? http://www.sinica.edu.tw/~metadata/standard/CDWA/inscript.htm

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90. Learn About Quadratic Equation. Complete Listing Of Quadratic Equation. Quadrati Abraham bar Hiyya HaNasi (also known by the Latin namesavasorda) was the firstto introduce the complete solution to Europe in his bookLiber embadorum. http://www.smartpedia.com/smart/browse/Quadratic_equation

Search: Culture Geography History Life ... Technology Quadratic equation Disaster Price Tag for Katrina Balloons The Las Vegas Sun - Next 6 Sep 23 28 58 Today September 07 2005 at 1 26 11 PDT Disaster Price Tag for Katrina Balloons By ANDREW TAYLOR ASSOCIATED PRESS WASHINGTON AP - Cost estimates for relief and recovery efforts from Hurricane Katrina are running as high as ..... Disaster price tag for Katrina balloons Centre Daily Times Top schools hang on to top rankings www.thenewstribune.com Voting site void seen as unfair www.rockymountainnews.com Yes, Let's Finger-Point and Blame www.zwire.com Analysis airs poverty of victims www.buffalonews.com Katrina and the Coming World Oil Crunch The Nation Magazine Census figures show more jobs, more poverty The Chicago Sun Times - News > > Columnists News Archive Census figures show more jobs more poverty August 31 2005 BY Staff Reporter Even as the economy was adding 2 2 million jobs last year more than 1 million more Americans fell into poverty according to Census ..... www.economist.com

91. Abraham Bar Hiyya - Viquipèdia Translate this page Abraham Bar Hiyya (o Abraham Iudaeus savasorda) (Barcelona, segle XII), fou unMatemàtic, astrònom i filòsof hebreu. És autor de diversos tractats i de http://ca.wikipedia.org/wiki/Abraham_Bar_Hiyya

Wikimedia necessita el teu ajut en la seva campanya per recaptar USD 200.000 . Vegeu la nostra p gina de recaptaci³ de fons per m©s detalls. Abraham Bar Hiyya De Viquip¨dia Abraham Bar Hiyya (o Abraham Iudaeus Savasorda Barcelona segle XII ), fou un Matem tic astr²nom i fil²sof hebreu . ‰s autor de diversos tractats i de nombroses obres matem tiques i astron²miques que contribu¯ren a la difusi³ de la ci¨ncia ar biga en el m³n occidental. Destaca la seva obra Geometria pr ctica ), escrita en hebreu A§² ©s un esborrany , ajudeu a fer-lo cr©ixer fins a convertir-lo en un article Obtingut de " http://ca.wikipedia.org/wiki/Abraham_Bar_Hiyya Categories Matem tics Astr²noms ... Catalans Views Article Discussi³ Edita Historial Eines personals Registre/Entrada Navegaci³ Portada La taverna Actualitat Canvis recents ... Donatius Cerca Eines El que enlla§a ac­ Seguiment d'enlla§os Carrega P gines especials ... Enlla§ permanent Altres idiomes English Slovenščina Aquesta p gina ha estat modificada per ºltima vegada el 07:11 8 ago, 2005. El contingut ©s disponible sota la GNU Free Documentation License Quant a la Viquip¨dia Av­s legal

92. Savasorda savasorda. Abraham bar Hiyya HaNasi ( 1070 - 1136 ) was a Spanish Jewishmathematician , also known as savasorda. He was born in http://therfcc.org/savasorda-278391.html

Savasorda Abraham bar Hiyya Ha-Nasi ) was a Spanish Jewish mathematician , also known as Savasorda . He was born in Barcelona ; and is remembered for his role in the dissemination of the quadratic formula External link http://www-history.mcs.st-andrews.ac.uk/history/Mathematicians/Abraham.html Other Languages: Danish Dutch English French ... Swedish This article originally from Wikipedia. The text on this site is made available under the terms of the GNU Free Documentation Licence Partner Sites: Anoca Encyclopedia Google Yahoo

93. Special & Rare Seforim Page 3 The summary for this English page contains characters that cannot be correctly displayed in this language/character set. http://www.famousrabbis.com/seforim/seforim3.html

Welcome - Shalom Aleichem The website for these seforim is found in the US at www.seforimonline.org/seforim.htm . All files are in PDF format to download Adobe Acrobat Reader click here to download free PDF reader no problem - please see this link page for full details Please see here for the Index of all our Jewish Spiritual Educational Websites. To download the sefer - CLICK ONCE ONLY on the link and WAIT, Page Sefer Hegayon HaNefesh, by one of the great Rishonim of the early 12th century, Rabeinu Avraham Bar Chiya HaNasi Savasorda, is a philosophical mussar book. It is known in English as The Meditation of the Sad Soul. This is the first edition of this sefer, and it comes with a very long introduction by Rav Shlomo Rapaport, the Rav of Prague in the middle 19th century, and with a biography of R' Avraham Bar Chiya, written by the publisher, Yitzchak Frieman. Or Hashem is a major philosophical work written by one of the great Rishonim of the 14th century, from Spain, Rabeinu Chasdai Crescas who was the student of the Ran, and the rebbe of the Rivash and Rabeinu Yosef Albo, the author of Sefer HaIkkarim. In Or Hashem, R' Chasdai Crescas rejects all kinds of Greek philosophy and many ideas of the Rambam and the Ralbag. He redefines the Principles of Faith, of which there are 6 and not 13 as the Rambam wrote. Or Hashem parallels the Rambam's Moreh Nevuchim and the Ralbag's MIlchamos Hashem. This is the first edition of this sefer published in Ferrara, Italy in 1555. Sefer HaTapuach is a philosophical work about the immortality of the soul, written by Aristotle and translated from Arabic into Hebrew by one of the great Rishonim, Rabeinu Avraham Bar Chisdai HaLevi. This edition comes with a German translation by J. Musen.

94. Special & Rare Seforim Page 5 The summary for this English page contains characters that cannot be correctly displayed in this language/character set. http://www.famousrabbis.com/seforim/seforim5.html

Welcome - Shalom Aleichem The website for these seforim is found in the US at www.seforimonline.org/seforim.htm . All files are in PDF format to download Adobe Acrobat Reader click here to download free PDF reader no problem - please see this link page for full details Please see here for the Index of all our Jewish Spiritual Educational Websites. To download the sefer - CLICK ONCE ONLY on the link and WAIT Page Sefer Tzachos is a sefer on Hebrew grammar by one of our great Rishonim, Rabeinu Avraham Ibn Ezra. Sefer Tzachos deals with linguistic correctnessand contains a brief outline of modern Hebrew meter. This edition comes with the commentary of Rav Gavriel Hirsch Lipman, a student of Rav Avraham Binyomin Hamburg, who was the Rav of Fuerth in Germany, a colleague of the Chasam Sofer and the rebbi of Rabbi Bamberger. Sefer Ohel Moed, written in 1480 by on of the great late Rishonim, Rabeinu Shlomo Ben Avraham from Urbino, is a dictionary of synonyms with references from Tanach and some word defintions. This is the second edition of this sefer published with introduction and notes by Prof. Willheimer. Sefer Yisodei HaTevuna uMigdal HaEmunah is an encyclopedic work about the subjects of arithmetic, geometry, optics, astronomy, and music, written by Rabeinu Avraham Bar Chiya HaNasi Savasorda, the author of Hegayon HaNefesh (#51). This work is incomplete because only fragments of this sefer have survived the ages. This is the second edition of this sefer which comes with a introduction and a Spanish translation, by Prof. Vallicrosa. The Hebrew original is in the back of the book.

95. Save - Encyclopedia Article About Save. Save. Word Word. A save is a baseball statistic A seeminglyintrinsic part of the game of baseball http://encyclopedia.thefreedictionary.com/save

Domain='thefreedictionary.com' word='Save' Your help is needed: American Red Cross The Salvation Army join mailing list webmaster tools Word (phrase): Word Starts with Ends with Definition subscription: Dictionary/ thesaurus Computing dictionary ... encyclopedia Wikipedia encyclopedia Hutchinson encyclopedia Save Also found in: Dictionary/thesaurus Computing Medical Legal ... Hutchinson 0.02 sec. Page tools Printer friendly Cite / link Email Feedback Save has several meaning: As an action: Saving (economics) saving generally means putting money aside, for example, by putting money in the bank or investing in a pension plan. Outside of economics, saving is typically used to refer to economizing, cutting costs, or to rescuing someone or something. In economics, personal saving has been defined as personal disposable income minus personal consumption expenditure. Click the link for more information. , to save money Save (sport) save in a sport means to stop a goal or to maintain the lead. Hockey A save in hockey is the successful blocking of a shot on goal by a goaltender. Football (Soccer) Similarly, a save in football is the successful blocking of a shot by a goalkeeper.

96. BAZZ.CO.IL The summary for this Hebrew page contains characters that cannot be correctly displayed in this language/character set. http://www.bazz.co.il/cat.phtml?leaf=2237

97. úåôñéí âìéí The summary for this Hebrew page contains characters that cannot be correctly displayed in this language/character set. http://intel.galim.org.il/history/Abraham.html

document.write("") document.write("") document.write("") document.write("") document.write("") document.write("") document.write(name1Txt) document.write("") àáøäí áø-çéà äðùéà - Abraham bar Hiyya Ha-Nasi àáøäí áø-çéà äéä îúîèé÷àé åàñèøåðåí éäåãé ñôøãé. àáøäí äðùéà éãåò âí áùí äìèéðé Savasorda, àùø ðâæø îúéàåø òáåãúå åîøîæ ùðùà áúô÷éã öéáåøé áîðäìú áøöìåðä. àáøäí áø-çéà äúôøñí áæëåú ñôøå "çéáåø äîùéëä åäúùáåøú" (îç÷ø áðåùà îãéãåú åçùáåï), àùø úåøâí ììèéðéú á- 1145. äñôø òåñ÷ áàìâáøä äòøáéú ä÷ãåîä áéåúø ùðëúáä áàéøåôä. îåáà áñôø äôúøåï äîìà ìîùååàä äøéáåòéú äëììéú, åäåà äè÷ñè äøàùåï áàéøåôä äîöéâ ôúøåï îñåâ æä. òåã îëúáéå "éñåã äúáåðä åîâãì äàîåðä" - àðöé÷ìåôãéä ìîúîèé÷ä, àñèøåðåîéä, àåôèé÷ä åîåæé÷ä. æàú äàðöé÷ìåôãéä äøàùåðä áòáøéú.àáøäí áø-çéà ëúá âí òì öåøúå ùì ëãåø äàøõ åòùä çéùåáéí äîúàøéí îñìåìé ëåëáéí. ñôøå "ìåçåú äðùéà" òåñ÷ áìåçåú àì-áèàðé.åàìå "ñôø äòéáåø" äåà äîç÷ø äòáøé äøàùåï äòåñ÷ áìåç äùðä. îç÷øå äôéìåñåôé "äâéåï äðôù äòæåáä" òåñ÷ áîäåú äèåá, äøò åáúåøú äîéãåú; å"îâéìú äîâìä" îöéâä àéê àáøäí øåàä àú ääéñèåøéä ëôé ùäéà îùú÷ôú áàñèøåìåâéä. äñôø çåæä àú äòúéã äîùéçé. http://www-history.mcs.st-and.ac.uk

98. Chronologie Des Sciences première encyclopédie scientifique en hébreu. Il est également connu comme un http://www.sciencepresse.qc.ca/kiosque/chronomonde04_moyen-age1.html

Page d'accueil Pour tout trouver sur Internet! en un clin d'oeil! kiosques des sciences sc. humaines sc. religieuses agroalimentaire environnement foresterie histoire livres de la recherche Plus de 1500 questions Les grandes dates de l'histoire du monde Vers 700 · En Chine: premiers plombages des dents avec une "pâte d'argent". Vers 700 (voir l'an 1276) voir l'an 120 an 980). Vers 800 astrolabe Hai nei hua yi tu Vers 900 Vers 1000 Vers 1014 · Les Chinois inventent la "variolisation", ancêtre de la vaccination contre la variole. Vers 1050 Une triade: Vers 1078 Vers 1090 · Le Chinois Su Song décrit une "horloge astronomique", sans doute fonctionnant sur le même principe que l'horloge mécanique que les Européens ne "découvrent" qu'au XIVe siècle. Vers 1100 Vers 1124 Vers 1132 Didascalicon ), publie le

99. Mathématiques Hébraïques Au Moyen-Age http://ufr6.univ-paris8.fr/lit-math/maths/tony.html

CNRS-CHSPAM (Villejuif) email: tlevy@infobiogen.fr Novembre 1998 retour aux enseignants-chercheurs - Euclide et la tradition euclidienne haut de la page haut de la page

100. ¤³¤Î¥Ú¡¼¥¸¤Ï°Ü¹Ô¤µ¤ì¤Þ¤·¤¿ | Melma! Translate this page The summary for this Japanese page contains characters that cannot be correctly displayed in this language/character set. http://www.melma.com/mag/63/m00030763/a00000048.html

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