Mathematical Connections with the Golden Ratio Linked to the Various Equations Concerning Some Sectors of Cosmology
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Unaccountable Numbers
Unaccountable Numbers Fabio Acerbi In memoriam Alessandro Lami, a tempi migliori HE AIM of this article is to discuss and amend one of the most intriguing loci corrupti of the Greek mathematical T corpus: the definition of the “unknown” in Diophantus’ Arithmetica. To do so, I first expound in detail the peculiar ter- minology that Diophantus employs in his treatise, as well as the notation associated with it (section 1). Sections 2 and 3 present the textual problem and discuss past attempts to deal with it; special attention will be paid to a paraphrase contained in a let- ter of Michael Psellus. The emendation I propose (section 4) is shown to be supported by a crucial, and hitherto unnoticed, piece of manuscript evidence and by the meaning and usage in non-mathematical writings of an adjective that in Greek math- ematical treatises other than the Arithmetica is a sharply-defined technical term: ἄλογος. Section 5 offers some complements on the Diophantine sign for the “unknown.” 1. Denominations, signs, and abbreviations of mathematical objects in the Arithmetica Diophantus’ Arithmetica is a collection of arithmetical prob- lems:1 to find numbers which satisfy the specific constraints that 1 “Arithmetic” is the ancient denomination of our “number theory.” The discipline explaining how to calculate with particular, possibly non-integer, numbers was called in Late Antiquity “logistic”; the first explicit statement of this separation is found in the sixth-century Neoplatonic philosopher and mathematical commentator Eutocius (In sph. cyl. 2.4, in Archimedis opera III 120.28–30 Heiberg): according to him, dividing the unit does not pertain to arithmetic but to logistic. -
15 Famous Greek Mathematicians and Their Contributions 1. Euclid
15 Famous Greek Mathematicians and Their Contributions 1. Euclid He was also known as Euclid of Alexandria and referred as the father of geometry deduced the Euclidean geometry. The name has it all, which in Greek means “renowned, glorious”. He worked his entire life in the field of mathematics and made revolutionary contributions to geometry. 2. Pythagoras The famous ‘Pythagoras theorem’, yes the same one we have struggled through in our childhood during our challenging math classes. This genius achieved in his contributions in mathematics and become the father of the theorem of Pythagoras. Born is Samos, Greece and fled off to Egypt and maybe India. This great mathematician is most prominently known for, what else but, for his Pythagoras theorem. 3. Archimedes Archimedes is yet another great talent from the land of the Greek. He thrived for gaining knowledge in mathematical education and made various contributions. He is best known for antiquity and the invention of compound pulleys and screw pump. 4. Thales of Miletus He was the first individual to whom a mathematical discovery was attributed. He’s best known for his work in calculating the heights of pyramids and the distance of the ships from the shore using geometry. 5. Aristotle Aristotle had a diverse knowledge over various areas including mathematics, geology, physics, metaphysics, biology, medicine and psychology. He was a pupil of Plato therefore it’s not a surprise that he had a vast knowledge and made contributions towards Platonism. Tutored Alexander the Great and established a library which aided in the production of hundreds of books. -
Fiboquadratic Sequences and Extensions of the Cassini Identity Raised from the Study of Rithmomachia
Fiboquadratic sequences and extensions of the Cassini identity raised from the study of rithmomachia Tom´asGuardia∗ Douglas Jim´enezy October 17, 2018 To David Eugene Smith, in memoriam. Mathematics Subject Classification: 01A20, 01A35, 11B39 and 97A20. Keywords: pythagoreanism, golden ratio, Boethius, Nicomachus, De Arithmetica, fiboquadratic sequences, Cassini's identity and rithmomachia. Abstract In this paper, we introduce fiboquadratic sequences as a consequence of an extension to infinity of the board of rithmomachia. Fiboquadratic sequences approach the golden ratio and provide extensions of Cassini's Identity. 1 Introduction Pythagoreanism was a philosophical tradition, that left a deep influence over the Greek mathematical thought. Its path can be traced until the Middle Ages, and even to present. Among medieval scholars, which expanded the practice of the pythagoreanism, we find Anicius Manlius Severinus Boethius (480-524 A.D.) whom by a free translation of De Institutione Arithmetica by Nicomachus of Gerasa, preserved the pythagorean teaching inside the first universities. In fact, Boethius' book became the guide of study for excellence during quadriv- ium teaching, almost for 1000 years. The learning of arithmetic during the arXiv:1509.03177v3 [math.HO] 22 Nov 2016 quadrivium, made necessary the practice of calculation and handling of basic mathematical operations. Surely, with the mixing of leisure with this exercise, Boethius' followers thought up a strategy game in which, besides the training of mind calculation, it was used to preserve pythagorean traditions coming from the Greeks and medieval philosophers. Maybe this was the origin of the philoso- phers' game or rithmomachia. Rithmomachia (RM, henceforward) became the ∗Department of Mathematics. -
Hypatia of Alexandria A. W. Richeson National Mathematics Magazine
Hypatia of Alexandria A. W. Richeson National Mathematics Magazine, Vol. 15, No. 2. (Nov., 1940), pp. 74-82. Stable URL: http://links.jstor.org/sici?sici=1539-5588%28194011%2915%3A2%3C74%3AHOA%3E2.0.CO%3B2-I National Mathematics Magazine is currently published by Mathematical Association of America. Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/about/terms.html. JSTOR's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Please contact the publisher regarding any further use of this work. Publisher contact information may be obtained at http://www.jstor.org/journals/maa.html. Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission. The JSTOR Archive is a trusted digital repository providing for long-term preservation and access to leading academic journals and scholarly literature from around the world. The Archive is supported by libraries, scholarly societies, publishers, and foundations. It is an initiative of JSTOR, a not-for-profit organization with a mission to help the scholarly community take advantage of advances in technology. For more information regarding JSTOR, please contact [email protected]. http://www.jstor.org Sun Nov 18 09:31:52 2007 Hgmdnism &,d History of Mdtbenzdtics Edited by G. -
Phyllotaxis: a Remarkable Example of Developmental Canalization in Plants Christophe Godin, Christophe Golé, Stéphane Douady
Phyllotaxis: a remarkable example of developmental canalization in plants Christophe Godin, Christophe Golé, Stéphane Douady To cite this version: Christophe Godin, Christophe Golé, Stéphane Douady. Phyllotaxis: a remarkable example of devel- opmental canalization in plants. 2019. hal-02370969 HAL Id: hal-02370969 https://hal.archives-ouvertes.fr/hal-02370969 Preprint submitted on 19 Nov 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Phyllotaxis: a remarkable example of developmental canalization in plants Christophe Godin, Christophe Gol´e,St´ephaneDouady September 2019 Abstract Why living forms develop in a relatively robust manner, despite various sources of internal or external variability, is a fundamental question in developmental biology. Part of the answer relies on the notion of developmental constraints: at any stage of ontogenenesis, morphogenetic processes are constrained to operate within the context of the current organism being built, which is thought to bias or to limit phenotype variability. One universal aspect of this context is the shape of the organism itself that progressively channels the development of the organism toward its final shape. Here, we illustrate this notion with plants, where conspicuous patterns are formed by the lateral organs produced by apical meristems. -
Did Hypatia Know About Negative Numbers?
Did Hypatia Know about Negative Numbers? Hypatia lived in Alexandria in the 4th-5th century AD. She was one of the most remarkable women in history. Her father Theon, presumably the last member of the Museum, instructed her in mathematics, philosophy and clas- sical Greek literature. With time she herself became a brilliant teacher of Neoplatonic philosophy and mathematics. Numerous young aspirants from wealthy Christian and pagan families came to Alexandria with the sole pur- pose of joining the sophisticated inner circle of her students. Theon and Hyptia edited several of the major mathematical treatises avail- able in their time: Arithmetica by Diophantus, Almagest by Ptolemy, Conics by Appolonius of Perga, and Elements by Euclid. A significant part of this work, in particular on the most difficult and demanding Arithmetica, she did alone. To some of these treatises she added commentaries and exemplary exercises. A charismatic figure in the city’s intellectual life and a close friend to many important officials, Hypatia had a significant influence on the Alexandrian elite and politics. She was admired for her knowledge, wisdom, righteousness and personal charm. Her public lectures for the Alexandrian intelligentsia attracted a great deal of interest. However, her elevated social position and popularity did not prevent her from becoming the victim of a brutal murder in 415 AD by the fanatic mob who accused her of conducting forbidden magical practices. Groundless rumors about Hypatia’s dealings with witchcraft were most likely inspired by her political enemies. Bishop Cyril was certainly one of them, but the allegations concerning his direct involvement have never been proven. -
Phyllotaxis: Is the Golden Angle Optimal for Light Capture?
Research Phyllotaxis: is the golden angle optimal for light capture? Soren€ Strauss1* , Janne Lempe1* , Przemyslaw Prusinkiewicz2, Miltos Tsiantis1 and Richard S. Smith1,3 1Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Cologne 50829, Germany; 2Department of Computer Science, University of Calgary, Calgary, AB T2N 1N4, Canada; 3Present address: Cell and Developmental Biology Department, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK Summary Author for correspondence: Phyllotactic patterns are some of the most conspicuous in nature. To create these patterns Richard S. Smith plants must control the divergence angle between the appearance of successive organs, Tel: +49 221 5062 130 sometimes to within a fraction of a degree. The most common angle is the Fibonacci or golden Email: [email protected] angle, and its prevalence has led to the hypothesis that it has been selected by evolution as Received: 7 May 2019 optimal for plants with respect to some fitness benefits, such as light capture. Accepted: 24 June 2019 We explore arguments for and against this idea with computer models. We have used both idealized and scanned leaves from Arabidopsis thaliana and Cardamine hirsuta to measure New Phytologist (2019) the overlapping leaf area of simulated plants after varying parameters such as leaf shape, inci- doi: 10.1111/nph.16040 dent light angles, and other leaf traits. We find that other angles generated by Fibonacci-like series found in nature are equally Key words: computer simulation, optimal for light capture, and therefore should be under similar evolutionary pressure. Our findings suggest that the iterative mechanism for organ positioning itself is a more heteroblasty, light capture, phyllotaxis, plant fitness. -
QUEST 2014: Homework 6 Fibonacci Sequence and Golden Ratio Each
Name: School: QUEST 2014: Homework 6 Fibonacci Sequence and Golden Ratio Each problem is worth 4 points. 1. Consider the following sequence: 1; 3; 9; 27; 81; 243;::: . a) What type of sequence is this? b) What is the next term in the sequence? c) Calculate the differences of consecutive terms below the sequence above. d) What type of sequence is the sequence of differences you obtained in part c? 2. The ratio of the length (the longer side) to the width of a Golden Rectangle is what value? Give the name (in words), the Greek letter used to denote this value, the exact value (using a square root), and a three decimal approximation. 3. What special geometric property does a Golden Rectangle have? Draw a picture to illustrate your answer. 4. Starting with A1 = 2;A2 = 5 construct a new sequence using the Fibonacci Rule An+1 = An + An−1. Thus A3 = 5 + 2 = 7, etc.. a) Find A3;A4;:::;A9. b) Next calculate the ratios An+1 and find the value that it is ap- An proaching. 5. Explain how to draw a Golden Spiral. Illustrate. 6. Draw the rectangle with sides of integer lengths that is the best pos- sible approximation to a Golden Rectangle if a) Both sides have lengths less than 20. Calculate the ratio. Hint: Use the Fibonacci sequence. b) Both sides have lengths less than 60. Calculate the ratio. 7. Show how to construct a Golden Rectangle starting from a square, using a straight-edge and compass. 8. Calculate the 20-th Fibonacci number with a calculator using the nearest integer formula for Fn. -
The Golden Relationships: an Exploration of Fibonacci Numbers and Phi
The Golden Relationships: An Exploration of Fibonacci Numbers and Phi Anthony Rayvon Watson Faculty Advisor: Paul Manos Duke University Biology Department April, 2017 This project was submitted in partial fulfillment of the requirements for the degree of Master of Arts in the Graduate Liberal Studies Program in the Graduate School of Duke University. Copyright by Anthony Rayvon Watson 2017 Abstract The Greek letter Ø (Phi), represents one of the most mysterious numbers (1.618…) known to humankind. Historical reverence for Ø led to the monikers “The Golden Number” or “The Devine Proportion”. This simple, yet enigmatic number, is inseparably linked to the recursive mathematical sequence that produces Fibonacci numbers. Fibonacci numbers have fascinated and perplexed scholars, scientists, and the general public since they were first identified by Leonardo Fibonacci in his seminal work Liber Abacci in 1202. These transcendent numbers which are inextricably bound to the Golden Number, seemingly touch every aspect of plant, animal, and human existence. The most puzzling aspect of these numbers resides in their universal nature and our inability to explain their pervasiveness. An understanding of these numbers is often clouded by those who seemingly find Fibonacci or Golden Number associations in everything that exists. Indeed, undeniable relationships do exist; however, some represent aspirant thinking from the observer’s perspective. My work explores a number of cases where these relationships appear to exist and offers scholarly sources that either support or refute the claims. By analyzing research relating to biology, art, architecture, and other contrasting subject areas, I paint a broad picture illustrating the extensive nature of these numbers. -
From Natural Numbers to Numbers and Curves in Nature - II
GENERAL I ARTICLE From Natural Numbers to Numbers and Curves in Nature - II A K Mallik In this second part of the article we discuss how simple growth models based on Fibbonachi numbers, golden sec tion, logarithmic spirals, etc. can explain frequently occuring numbers and curves in living objects. Such mathematical modelling techniques are becoming quite popular in the study of pattern formation in nature. A K Mallik is a Professor Fibonacci Sequence and Logarithmic Spiral as of Mechanical Engineer ing at Indian Institute of Dynamic (Growth) Model Technology, Kanpur. His research interest includes Fibonacci invented his sequence with relation to a problem about kinematics, vibration the growth of rabbit population. It was not, of course, a very engineering. He partici realistic model for this particular problem. However, this model pates in physics and may be applied to the cell growth ofliving organisms. Let us think mathematics education at the high-school level. of the point C, (see Part I Figure 1), as the starting point. Then a line grows from C towards both left and right. Suppose at every step (after a fixed time interval), the length increases so as to make the total length follow the Fibonacci sequence. Further, assume that due to some imbalance, the growth towards the right starts lPartl. Resonance. Vo1.9. No.9. one step later than that towards the left. pp.29-37.2004. If the growth stops after a large number of steps to generate tp.e line AB, then ACIAB = tp (the Golden Section). Even if we model the growth rate such that instead of the total length, the increase in length at every step follows the Fibonacci sequence, we again get (under the same starting imbalance) AC/AB = tp. -
The Meaning of ''Plasmatikon'' in Diophantus' ''Arithmetica''
The meaning of ”plasmatikon” in Diophantus’ ”Arithmetica”. Fabio Acerbi To cite this version: Fabio Acerbi. The meaning of ”plasmatikon” in Diophantus’ ”Arithmetica”.. Archive for History of Exact Sciences, Springer Verlag, 2009, 63, pp. 5-31. 10.1007/s00407-008-0028-8. halshs-00346121 HAL Id: halshs-00346121 https://halshs.archives-ouvertes.fr/halshs-00346121 Submitted on 29 Apr 2010 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Archive for History of Exact Sciences 63 (2009), 5-31 The Meaning of plasmatikovn in Diophantus’ Arithmetica FABIO ACERBI 1 Introduction Diophantus’ Arithmetica is an idiosyncratic treatise: it almost calls for interpretations that force conceptions into the text that are extraneous to the by-and-large ineffable aims of its author. A case in point is constituted by a short clause found in three problems of book I.1 It is not a harmless clause: it contains the elusive adjective plasmatikovn as the crucial word, the translation and meaning of which sparked a long-lasting controversy that has become a non- negligible aspect of the debate about the possibility of interpreting Diophantus’ approach and, more generally, Greek mathematics in algebraic terms.2 The whole interpretative controversy is in fact entangled. -
The Generalized Principle of the Golden Section and Its Applications in Mathematics, Science, and Engineering
Chaos, Solitons and Fractals 26 (2005) 263–289 www.elsevier.com/locate/chaos The Generalized Principle of the Golden Section and its applications in mathematics, science, and engineering A.P. Stakhov International Club of the Golden Section, 6 McCreary Trail, Bolton, ON, Canada L7E 2C8 Accepted 14 January 2005 Abstract The ‘‘Dichotomy Principle’’ and the classical ‘‘Golden Section Principle’’ are two of the most important principles of Nature, Science and also Art. The Generalized Principle of the Golden Section that follows from studying the diagonal sums of the Pascal triangle is a sweeping generalization of these important principles. This underlies the foundation of ‘‘Harmony Mathematics’’, a new proposed mathematical direction. Harmony Mathematics includes a number of new mathematical theories: an algorithmic measurement theory, a new number theory, a new theory of hyperbolic functions based on Fibonacci and Lucas numbers, and a theory of the Fibonacci and ‘‘Golden’’ matrices. These mathematical theories are the source of many new ideas in mathematics, philosophy, botanic and biology, electrical and computer science and engineering, communication systems, mathematical education as well as theoretical physics and physics of high energy particles. Ó 2005 Elsevier Ltd. All rights reserved. Algebra and Geometry have one and the same fate. The rather slow successes followed after the fast ones at the beginning. They left science at such step where it was still far from perfect. It happened,probably,because Mathematicians paid attention to the higher parts of the Analysis. They neglected the beginnings and did not wish to work on such field,which they finished with one time and left it behind.