Academic literature on the topic '2-descente'

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Journal articles on the topic "2-descente"

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Dolan, Stan. "Pell's equation and Fermat." Mathematical Gazette 96, no. 535 (2012): 66–70. http://dx.doi.org/10.1017/s0025557200003971.

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Given that it took until the 19th century for the case n = 5 of Fermat's last theorem to be settled, it is not surprising that Fermat's claim of having a proof for all exponents greater than 2 is nowadays treated with considerable scepticism. However, perhaps the most important aspect of his claim has been the impetus it has given to the development of mathematical techniques over the three and a half centuries leading up to the proof by Wiles and Taylor [1, 2]. Not least amongst these techniques has been Fermat's own idea of proof by descente infinie [3,4].
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Dolan, Stan. "Fermat and the difference of two squares." Mathematical Gazette 96, no. 537 (2012): 480–91. http://dx.doi.org/10.1017/s0025557200005118.

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In a previous note [1], Fermat's method of descente infinie was used to prove that the equations.have no positive integer solutions. The geometrically based proof of [1] masked the underlying use of the difference of two squares. In the proofs of this article we shall make its use explicit, just as Fermat did [2, pp. 293-294].We shall use the elementary idea of the difference of two squares to develop a powerful technique for solving equations of the form ax4 + bx2y2 + cy4 = z2. This will then be applied to three problems of historical interest.
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Narbonne, Jean-Marc. "L’énigme de la non-descente partielle de l’âme chez Plotin : la piste gnostique/hermétique de l’ὁμοούσιος". Articles spéciaux 64, № 3 (2009): 691–708. http://dx.doi.org/10.7202/037700ar.

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Résumé La thèse typiquement plotinienne de la non-descente partielle de l’âme n’est pas le simple reflet de la capacité personnelle de Plotin à remonter par lui-même vers le principe — comme on l’a longtemps suggéré faute de mieux —, mais la reformulation plotinienne d’une doctrine précise, l’ὁμοούσιος gnostique/hermétique, l’élu gnostique — le « pneumatique » plus précisément —, dont l’âme demeure consubstantielle au Plérôme divin, ne perdant jamais son lien substantiel avec lui et se trouvant par là même assuré du salut. L’âme non pas simplement parente (συγγενής) du divin comme l’enseignait
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Charland, Jean-Pierre. "Corbo, C. (1994). Matériaux fragmentaires pour une histoire de l’UQAM. De la descente aux enfers à l’UQAM de l’an 2 000. Montréal : Les Éditions Logiques." Revue des sciences de l'éducation 20, no. 4 (1994): 788. http://dx.doi.org/10.7202/031769ar.

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COLLIOT-THÉLÈNE, J. L., and A. N. SKOROBOGATOV. "Descent on fibrations over P1k revisited." Mathematical Proceedings of the Cambridge Philosophical Society 128, no. 3 (2000): 383–93. http://dx.doi.org/10.1017/s0305004199004077.

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Soient k un corps de nombres et f: X → P1k un k-morphisme surjectif de k-variétés projectives lisses, à fibre générique géométriquement intègre. Supposons que les fibres de f au-dessus d'un sous-ensemble Hilbertien de P1(k) satisfont le principe de Hasse (resp. le principe de Hasse et l'approximation faible). Supposons que toutes les fibres géométriques de f ont au moins une composante de multiplicité un. Le rang de f est la somme des degrés des points fermés P dont la fibre XP = f−1(P) ne possède pas de composante de multiplicité un géométriquement intègre. Supposons le rang au plus égal à 2.
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Prott, Lyndel V. "Vincent Noce, La Collection Egoiste (The Selfish Collector)." International Journal of Cultural Property 13, no. 1 (2006): 115–19. http://dx.doi.org/10.1017/s0940739106000324.

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Vincent Noce, La Collection Egoiste (The Selfish Collector) pp. 328. J. C. Lattès, Paris, 2005. ISBN 2-7096-241-9.Few people who follow cases relating to the illicit trade can have missed the celebrated case of Stéfane Breitwieser, the Alsatian misfit who stole, over a period of 8 or so years, hundreds of objects from museums and churches to squirrel away in his attic rooms, or that of his mother Mireille Stengel, who destroyed almost all of it by disposal in the family garbage bin or by throwing it into a canal. This book, however, shows just how much a dedicated investigative journalist can
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Colliot-Th�l�ne, Jean-Louis, and Jean-Jacques Sansuc. "La descente sur les vari�t�s rationnelles, II." Duke Mathematical Journal 54, no. 2 (1987): 375–492. http://dx.doi.org/10.1215/s0012-7094-87-05420-2.

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LEMMERMEYER, FRANZ. "Hilbert $2$-class fields and $2$-descent." Publicationes Mathematicae Debrecen 88, no. 3-4 (2016): 319–43. http://dx.doi.org/10.5486/pmd.2016.7337.

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Orsi, Fernanda A., Joyce Maria Annichino-Bizzacchi, Erich Vinicius de Paula, Michael R. Langley, and Karen Weck. "VKORC1 V66M Mutation in African Brazilian Patient Resistant to Oral Anticoagulant Therapy." Blood 114, no. 22 (2009): 2102. http://dx.doi.org/10.1182/blood.v114.22.2102.2102.

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Abstract Abstract 2102 Poster Board II-79 BACKGROUND: Two enzymatic complexes are related to therapeutic response to coumarin: 1)cytocrome P-450 2C9 (CYP2C9), that metabolizes the drug; and 2)vitamin K epoxide reductase complex subunit 1 (VKORC1), targeted by coumarin. Haplotypes CYP2C9 *2 and *3 and VKORC1*2, more frequent in Caucasians, are related to coumarin sensitivity. VKORC1*3 and *4 confer resistance to the anticoagulant and are found mainly in Africandescents. MATERIAL AND METHODS: To determine genetic variability associated with altered warfarin response among Brazilian patients, six
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Lévêque, J. M., J. Brisswalter, O. Bernard, and C. Goubault. "Évaluation des caractéristiques physiologiques des kayakistes de descente de haut niveau de performance." Science & Sports 16, no. 1 (2001): 23–28. http://dx.doi.org/10.1016/s0765-1597(00)00033-2.

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Dissertations / Theses on the topic "2-descente"

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Bel, Hadj Fredj Olfa. "Ascente essentielle, descente essentielle et problème de perturbations." Lille 1, 2007. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2007/50376-2007-2.pdf.

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Dans ce travail nous étudions un problème de relèvement dans l'algèbre de Calkin. Plus précisement, nous donnons une réponse complète à la question suivante : Soit T un opérateur borné défini sur un espace de Hilbert séparable tel que zéro soit un pôle d'ordre d de la résolvante de π(T) dans l'algèbre de Calkin, existe-t-il un opérateur compact K tel que zéro soit un pôle d'ordre d de la résolvante de T + K ? Dans le but de répondre à cette question, nous avons eu besoin d'étudier et de developper la notion de l'ascente essentielle et celle de la descente essentielle d'un opérateur. D'autre pa
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Mahé, Valéry. "Calculs dans les jacobiennes de courbes algébriques : applications en géométrie algébrique réelle." Phd thesis, Université Rennes 1, 2006. http://tel.archives-ouvertes.fr/tel-00124040.

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Nous nous intéressons à un aspect quantitatif du dix-septième problème de Hilbert : construire une famille de polynômes en deux variables, à coefficients réels, de degré 8 en l'une des deux variables qui sont positifs mais ne sont pas somme de trois carrés de fractions rationnelles.<br /><br />Comme expliqué par Huisman et Mahé, un polynôme donné P en deux variables à coefficients réels, totalement positif, unitaire, sans facteur carré et de degré multiple de 4 en l'une des variables est une somme de trois carrés de fractions rationnelles si et seulement si la jacobienne d'une certaine courbe
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Ben, Sassi Marwen. "Contribution à la mesure temporelle et à la simulation en équilibrage harmonique de la stabilité d’impulsion à impulsion de transistors en technologie GaN." Thesis, Limoges, 2021. http://www.theses.fr/2021LIMO0018.

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Ce travail de thèse a permis de décrire, pour la première fois à notre connaissance, une comparaison des performances Pulse à Pulse (P2P) d'un HEMTAlGaN/GaN obtenue, expérimentalement d'une part grâce à un système de caractérisation entièrement étalonné et d'autre part, grâce à une simulation Harmonic Balance (HB) 2tons d'un modèle fonderie du transistor. Les mesures et les simulations HB permettent l'extraction simultanée et cohérente, d'une part, des enveloppes complexes des tensions et courants hyperfréquences (RF) et, d'autre part, du courant de drain Basse Fréquence (BF) généré par les no
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Djamaï, Bénaouda. "Sur la 2-cohomologie non abélienne : corps des modules." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10020/document.

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Soit f : X ? Y un morphisme de schémas et G un Y -schéma en groupes. Lorsque G est abélien, la suite spectrale de Leray associée à f, Ep,q= Hp(Y,Rq,f.Gx)=&gt; Hp+q(X,Gx), nous donne une suite exacte en basses dimensions : 0 ?H1(Y,f*G_x)? H1(X,Gx)?H0(Y,R1f*Gx)? H2(Y,f*Gx)?H2(X, Gx)tr?H1(Y,R1f*Gx)?H3(Y,f*Gx). Le but de ce travail est d'étudier l'analogue de cette situation lorsque G n'est plus abélien. La notion de gerbe introduite par Grothendieck permet de construire un substitut au cobord d0,1H0(Y,R1f*Gx)? H2(Y,f*Gx). Ici nous étudions plus particulièrement l'obstruction à descendre une Gx-ge
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Mokrani, Youcef. "Generalizations of monsky matrices for elliptic curves in legendre form." Thesis, 2020. http://hdl.handle.net/1866/24347.

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Un nombre naturel n est dit congruent si il est l’aire d’un triangle rectangle dont tous les cotés sont de longueur rationnelle. Le problème des nombres congruents consiste à déterminer quels nombres sont congruents. Cette question, connue depuis plus de 1000 ans, est toujours ouverte. Elle est liée à la théorie des courbes elliptiques, car le naturel n est congruent si et seulement si la courbe elliptique y²=x³-n²x possède un point rationnel d’ordre infini. Ce lien entre les nombres congruents et les courbes elliptiques permet d’accéder à des techniques venant de la géométrie algébrique. Une
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Michaud, Jean-François. "Le contrôle du tronc chez les sujets avec et sans lombagie pendant la marche au niveau, la montée et la descente d'escalier /." 2002. http://proquest.umi.com/pqdweb?did=766571651&sid=10&Fmt=2&clientId=9268&RQT=309&VName=PQD.

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Shih, pei-ying, and 施佩瑩. "Two Extensions on the Haseman-Elston Model:(1)Linearity Between the Dependent Product Variable and Genes Identical By Descent;(2)Use of Genes Identical By State As the Independent Variable for Modeling." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/24899459031691059123.

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碩士<br>國立臺灣大學<br>流行病學研究所<br>90<br>For mapping a quantitative trait locus (QTL), several approaches have been developed. Haseman and Elston (H-E) [Behav Genet 2:3-19, 1972] proposed a method to detect genetic linkage between a QTL and a polymorphic marker. They used the linkage relation between the QTL and the marker to construct a regression model, which regresses the squared sib-pair trait difference on the estimated proportion of genes identical by descent (IBD) at a marker locus: a significantly negative regression coefficient suggests linkage. Although this procedure is easily implemented,
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Books on the topic "2-descente"

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Ullmann, Julian R. Compiling in modula-2: A first introduction to classical recursive descent compiling. Prentice Hall, 1994.

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Waldo, George S. A documented descent of Edmund Freeman Waldo (1834-1906) and Mary Waldo Page from Olive Welby (1604-1691/2) through the Farwell and Hovey families. [s.n., 1989.

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Meston, Zach. Unofficial Playstation Ultimate Strategy Guide. Sybex Inc, 1997.

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M, Klinger-F. Aventures du docteur Faust et sa descente aux enfers. Tome 2. Hachette Livre - BNF, 2020.

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Thompson, David. Descent into Tartarus: the Furies, Book 2. Independently published, 2018.

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McKenna, Caitlyn. Descent of Demons: Keepers of Eternity - Book 2. Extasy Books, 2005.

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Gilbert, Martin. The Descent into Barbarism (History of the 20th Century 2). HarperCollins Publishers Ltd, 1999.

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Gilbert, Martin. The Descent into Barbarism (History of the 20th Century 2). HarperCollins Publishers Ltd, 1999.

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Place to Live and Descent into Paradise (2 books in one). Firefly, 2010.

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Newman, AJ. Descent Into Darkness: American Apocalypse: Book 2 EMP Post Apocalyptic Survival Fiction. Independently published, 2018.

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Book chapters on the topic "2-descente"

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Schmidt, Bernhard. "2. The field descent." In Characters and Cyclotomic Fields in Finite Geometry. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-540-45797-8_2.

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Ahmed, Reyan, Felice De Luca, Sabin Devkota, Stephen Kobourov, and Mingwei Li. "Graph Drawing via Gradient Descent, $$(GD)^2$$." In Lecture Notes in Computer Science. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-68766-3_1.

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Zhou, Jianqin, Wanquan Liu, and Xifeng Wang. "Characterization of the Third Descent Points for the k-error Linear Complexity of $$2^n$$ 2 n -periodic Binary Sequences." In Information and Communications Security. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29814-6_14.

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Krueger, Ryan, Jesse Michael Han, and Daniel Selsam. "Automatically Building Diagrams for Olympiad Geometry Problems." In Automated Deduction – CADE 28. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-79876-5_33.

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AbstractWe present a method for automatically building diagrams for olympiad-level geometry problems and implement our approach in a new open-source software tool, the Geometry Model Builder (GMB). Central to our method is a new domain-specific language, the Geometry Model-Building Language (GMBL), for specifying geometry problems along with additional metadata useful for building diagrams. A GMBL program specifies (1) how to parameterize geometric objects (or sets of geometric objects) and initialize these parameterized quantities, (2) which quantities to compute directly from other quantities, and (3) additional constraints to accumulate into a (differentiable) loss function. A GMBL program induces a (usually) tractable numerical optimization problem whose solutions correspond to diagrams of the original problem statement, and that we can solve reliably using gradient descent. Of the 39 geometry problems since 2000 appearing in the International Mathematical Olympiad, 36 can be expressed in our logic and our system can produce diagrams for 94% of them on average. To the best of our knowledge, our method is the first in automated geometry diagram construction to generate models for such complex problems.
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Abbasi, Hamidreza, Ali Akbar Safavi, and Maryam Salimifard. "Type-2 Fuzzy Wavelet Neural Network Controller Design Based on an Adaptive Gradient Descent Method for Nonlinear Dynamic Systems." In Applied Methods and Techniques for Mechatronic Systems. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36385-6_12.

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Linnér, Anders. "Steepest Descent as a Tool to Find Critical Points of ∫ k 2 Defined on Curves in the Plane with Arbitrary Types of Boundary Conditions." In Mathematical Sciences Research Institute Publications. Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4613-9711-3_14.

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Shea, Shawn Christopher. "Descente dans le maelström." In Évaluation du potentiel suicidaire. Elsevier, 2008. http://dx.doi.org/10.1016/b978-2-84299-851-6.50002-x.

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"2. Descent and Relations." In Native Tongues. Harvard University Press, 2015. http://dx.doi.org/10.4159/harvard.9780674735798.c4.

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"Ce dont la descente est répétée". У Le parfait manuel des sciences coraniques al-Itqān fī ʿulūm al-Qurʾān de Ğalāl ad-Dīn as-Suyūṭī (849/1445–911/1505) (2 vols). BRILL, 2017. http://dx.doi.org/10.1163/9789004357112_014.

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"Modalité de la descente du Coran". У Le parfait manuel des sciences coraniques al-Itqān fī ʿulūm al-Qurʾān de Ğalāl ad-Dīn as-Suyūṭī (849/1445–911/1505) (2 vols). BRILL, 2017. http://dx.doi.org/10.1163/9789004357112_019.

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Conference papers on the topic "2-descente"

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Fang, Tingting, and Mark van Hoeij. "2-descent for second order linear differential equations." In the 36th international symposium. ACM Press, 2011. http://dx.doi.org/10.1145/1993886.1993907.

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He, Jinguo. "Optimizing 2-D Triangulations by the Steepest Descent Method." In 2008 Pacific-Asia Workshop on Computational Intelligence and Industrial Application (PACIIA). IEEE, 2008. http://dx.doi.org/10.1109/paciia.2008.310.

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Guo, Rui, Maokun Li, Fan Yang, Shenheng Xu, and Aria Abubakar. "Regularized supervised descent method for 2-D magnetotelluric data inversion." In SEG Technical Program Expanded Abstracts 2019. Society of Exploration Geophysicists, 2019. http://dx.doi.org/10.1190/segam2019-3215540.1.

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Xu, Zhiqiang, Xin Cao, and Xin Gao. "Convergence Analysis of Gradient Descent for Eigenvector Computation." In Twenty-Seventh International Joint Conference on Artificial Intelligence {IJCAI-18}. International Joint Conferences on Artificial Intelligence Organization, 2018. http://dx.doi.org/10.24963/ijcai.2018/407.

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We present a novel, simple and systematic convergence analysis of gradient descent for eigenvector computation. As a popular, practical, and provable approach to numerous machine learning problems, gradient descent has found successful applications to eigenvector computation as well. However, surprisingly, it lacks a thorough theoretical analysis for the underlying geodesically non-convex problem. In this work, the convergence of the gradient descent solver for the leading eigenvector computation is shown to be at a global rate O(min{ (lambda_1/Delta_p)^2 log(1/epsilon), 1/epsilon }), where De
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Dwyer-Cianciolo, Alicia M., and Tara Polsgrove. "Human Mars Entry, Descent, and Landing Architecture Study: Phase 2 Summary." In 2018 AIAA SPACE and Astronautics Forum and Exposition. American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-5190.

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Ulfarsson, M. O., and M. Dalla Mura. "A Low-Rank Method for Sentinel-2 Sharpening Using Cyclic Descent." In IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2018. http://dx.doi.org/10.1109/igarss.2018.8519256.

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Zhao, Liang. "Adaptive interval type-2 fuzzy control based on gradient descent algorithm." In 2011 2nd International Conference on Intelligent Control and Information Processing (ICICIP). IEEE, 2011. http://dx.doi.org/10.1109/icicip.2011.6008380.

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Vuillemin, Pierre, Charles Poussot-Vassal, and Daniel Alazard. "Poles residues descent algorithm for optimal frequency-limited ℋ2 model approximation." In 2014 European Control Conference (ECC). IEEE, 2014. http://dx.doi.org/10.1109/ecc.2014.6862152.

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Sie, Astrini, Jonathan Realmuto, and Eric Rombokas. "A Lower Limb Prosthesis Haptic Feedback System for Stair Descent." In 2017 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dmd2017-3409.

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Though there are a variety of prosthetic limbs that address the motor deficits associated with amputation, there has been relatively little progress in restoring sensation. Prosthetic limbs provide little direct sensory feedback of the forces they encounter in the environment, but “closing the loop” between sensation and action can make a great difference in performance [1]. For users of lower limb prostheses, stair descent is a difficult and dangerous task. The difficulty in stair descent can be attributed to three different factors: 1) Absence of tactile and haptic sensations at the bottom o
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Lindstrand, Per. "Parachute Subsystems for the Beagle 2 Mars Lander Entry Descent and Landing Systems." In 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-1902.

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Reports on the topic "2-descente"

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Bleistein, Norman. MAthematica (Trademark) and the Method of Steepest Descents. Part 2. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada252502.

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