The Center for Gifted 2019/20 Fall and Winter Weekday Wonders Syllabuses for the Great Mathematics Experience
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Linguistic Presentation of Objects
Zygmunt Ryznar dr emeritus Cracow Poland [email protected] Linguistic presentation of objects (types,structures,relations) Abstract Paper presents phrases for object specification in terms of structure, relations and dynamics. An applied notation provides a very concise (less words more contents) description of object. Keywords object relations, role, object type, object dynamics, geometric presentation Introduction This paper is based on OSL (Object Specification Language) [3] dedicated to present the various structures of objects, their relations and dynamics (events, actions and processes). Jay W.Forrester author of fundamental work "Industrial Dynamics”[4] considers the importance of relations: “the structure of interconnections and the interactions are often far more important than the parts of system”. Notation <!...> comment < > container of (phrase,name...) ≡> link to something external (outside of definition)) <def > </def> start-end of definition <spec> </spec> start-end of specification <beg> <end> start-end of section [..] or {..} 1 list of assigned keywords :[ or :{ structure ^<name> optional item (..) list of items xxxx(..) name of list = value assignment @ mark of special attribute,feature,property @dark unknown, to obtain, to discover :: belongs to : equivalent name (e.g.shortname) # number of |name| executive/operational object ppppXxxx name of item Xxxx with prefix ‘pppp ‘ XXXX basic object UUUU.xxxx xxxx object belonged to UUUU object class & / conjunctions ‘and’ ‘or’ 1 If using Latex editor we suggest [..] brackets -
Golden Ratio: a Subtle Regulator in Our Body and Cardiovascular System?
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/306051060 Golden Ratio: A subtle regulator in our body and cardiovascular system? Article in International journal of cardiology · August 2016 DOI: 10.1016/j.ijcard.2016.08.147 CITATIONS READS 8 266 3 authors, including: Selcuk Ozturk Ertan Yetkin Ankara University Istinye University, LIV Hospital 56 PUBLICATIONS 121 CITATIONS 227 PUBLICATIONS 3,259 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: microbiology View project golden ratio View project All content following this page was uploaded by Ertan Yetkin on 23 August 2019. The user has requested enhancement of the downloaded file. International Journal of Cardiology 223 (2016) 143–145 Contents lists available at ScienceDirect International Journal of Cardiology journal homepage: www.elsevier.com/locate/ijcard Review Golden ratio: A subtle regulator in our body and cardiovascular system? Selcuk Ozturk a, Kenan Yalta b, Ertan Yetkin c,⁎ a Abant Izzet Baysal University, Faculty of Medicine, Department of Cardiology, Bolu, Turkey b Trakya University, Faculty of Medicine, Department of Cardiology, Edirne, Turkey c Yenisehir Hospital, Division of Cardiology, Mersin, Turkey article info abstract Article history: Golden ratio, which is an irrational number and also named as the Greek letter Phi (φ), is defined as the ratio be- Received 13 July 2016 tween two lines of unequal length, where the ratio of the lengths of the shorter to the longer is the same as the Accepted 7 August 2016 ratio between the lengths of the longer and the sum of the lengths. -
Joint Session: Measuring Fractals Diversity in Mathematics, 2019
Joint Session: Measuring Fractals Diversity in Mathematics, 2019 Tongou Yang The University of British Columbia, Vancouver [email protected] July 2019 Tongou Yang (UBC) Fractal Lectures July 2019 1 / 12 Let's Talk Geography Which country has the longest coastline? What is the longest river on earth? Tongou Yang (UBC) Fractal Lectures July 2019 2 / 12 (a) Map of Canada (b) Map of Nunavut Which country has the longest coastline? List of countries by length of coastline Tongou Yang (UBC) Fractal Lectures July 2019 3 / 12 (b) Map of Nunavut Which country has the longest coastline? List of countries by length of coastline (a) Map of Canada Tongou Yang (UBC) Fractal Lectures July 2019 3 / 12 Which country has the longest coastline? List of countries by length of coastline (a) Map of Canada (b) Map of Nunavut Tongou Yang (UBC) Fractal Lectures July 2019 3 / 12 What's the Longest River on Earth? A Youtube Video Tongou Yang (UBC) Fractal Lectures July 2019 4 / 12 Measuring a Smooth Curve Example: use a rope Figure: Boundary between CA and US on the Great Lakes Tongou Yang (UBC) Fractal Lectures July 2019 5 / 12 Measuring a Rugged Coastline Figure: Coast of Nova Scotia Tongou Yang (UBC) Fractal Lectures July 2019 6 / 12 Covering by Grids 4 3 2 1 0 0 1 2 3 4 Tongou Yang (UBC) Fractal Lectures July 2019 7 / 12 Counting Grids Number of Grids=15 Side Length ≈ 125km Coastline ≈ 15 × 125 = 1845km. Tongou Yang (UBC) Fractal Lectures July 2019 8 / 12 Covering by Finer Grids 9 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 Tongou Yang (UBC) Fractal Lectures July 2019 9 / 12 Counting Grids Number of Grids=34 Side Length ≈ 62km Coastline ≈ 34 × 62 = 2108km. -
Linguistic Presentation of Object Structure and Relations in OSL Language
Zygmunt Ryznar Linguistic presentation of object structure and relations in OSL language Abstract OSL© is a markup descriptive language for the description of any object in terms of structure and behavior. In this paper we present a geometric approach, the kernel and subsets for IT system, business and human-being as a proof of universality. This language was invented as a tool for a free structured modeling and design. Keywords free structured modeling and design, OSL, object specification language, human descriptive language, factual markup, geometric view, object specification, GSO -geometrically structured objects. I. INTRODUCTION Generally, a free structured modeling is a collection of methods, techniques and tools for modeling the variable structure as an opposite to the widely used “well-structured” approach focused on top-down hierarchical decomposition. It is assumed that system boundaries are not finally defined, because the system is never to be completed and components are are ready to be modified at any time. OSL is dedicated to present the various structures of objects, their relations and dynamics (events, actions and processes). This language may be counted among markup languages. The fundamentals of markup languages were created in SGML (Standard Generalized Markup Language) [6] descended from GML (name comes from first letters of surnames of authors: Goldfarb, Mosher, Lorie, later renamed as Generalized Markup Language) developed at IBM [15]. Markups are usually focused on: - documents (tags: title, abstract, keywords, menu, footnote etc.) e.g. latex [14], - objects (e.g. OSL), - internet pages (tags used in html, xml – based on SGML [8] rules), - data (e.g. structured data markup: microdata, microformat, RFDa [13],YAML [12]). -
The Golden Ratio
Mathematical Puzzle Sessions Cornell University, Spring 2012 1 Φ: The Golden Ratio p 1 + 5 The golden ratio is the number Φ = ≈ 1:618033989. (The greek letter Φ used to 2 represent this number is pronounced \fee".) Where does the number Φ come from? Suppose a line is broken into two pieces, one of length a and the other of length b (so the total length is a + b), and a and b are chosen in a very specific way: a and b are chosen so that the ratio of a + b to a and the ratio of a to b are equal. a b a + b a ! a b a+b a It turns out that if a and b satisfy this property so that a = b then the ratios are equal to the number Φ! It is called the golden ratio because among the ancient Greeks it was thought that this ratio is the most pleasing to the eye. a Try This! You can verify that if the two ratios are equal then b = Φ yourself with a bit of careful algebra. Let a = 1 and use the quadratic equation to find the value of b that makes 1 the two ratios equal. If you successfully worked out the value of b you should find b = Φ. The Golden Rectangle A rectangle is called a golden rectangle if the ratio of the sides of the rectangle is equal to Φ, like the one shown below. 1 Φ p 1 −1+ 5 If the ratio of the sides is Φ = 2 this is also considered a golden rectangle. -
Geometry and Art & Architecture
CHARACTERISTICS AND INTERRELATIONS OF FORMS ARCH 115 Instructor: F. Oya KUYUMCU Mathematics in Architecture • Mathematics can, broadly speaking, be subdivided into to study of quantity - arithmetic structure – algebra space – geometry and change – analysis. In addition to these main concerns, there are also sub-divisions dedicated to exploring links from the heart of mathematics to other field. to logic, to set theory (foundations) to the empirical mathematics of the various sciences to the rigorous study of uncertanity Lecture Topics . Mathematics and Architecture are wholly related with each other. All architectural products from the door to the building cover a place in space. So, all architectural elements have a volume. One of the study field of mathematics, name is geometry is totally concern this kind of various dimensional forms such as two or three or four. If you know geometry well, you can create true shapes and forms for architecture. For this reason, in this course, first we’ll look to the field of geometry especially two and three dimensions. Our second goal will be learning construction (drawing) of this two or three dimensional forms. • Architects intentionally or accidently use ratio and mathematical proportions to shape buildings. So, our third goal will be learning some mathematical concepts like ratio and proportions. • In this course, we explore the many places where the fields of art, architecture and mathematics. For this aim, we’ll try to learn concepts related to these fields like tetractys, magic squares, fractals, penrose tilling, cosmic rythms etc. • We will expose to you to wide range of art covering a long historical period and great variety of styles from the Egyptians up to contemporary world of art and architecture. -
Grade 6 Math Circles Fractals Introduction
Faculty of Mathematics Centre for Education in Waterloo, Ontario N2L 3G1 Mathematics and Computing Grade 6 Math Circles March 10/11 2020 Fractals Introduction Fractals are mathematical objects that are self-similar, meaning that they have the same structure when you zoom in on them. For example, this is a famous fractal called the Mandelbrot set: Image by Arnaud Cheritat, retrieved from: https://www.math.univ-toulouse.fr/~cheritat/wiki-draw/index.php/File:MilMand_1000iter.png 1 The main shape, which looks a bit like a snowman, is shaded in the image below: As an exercise, shade in some of the smaller snowmen that are all around the largest one in the image above. This is an example of self-similarity, and this pattern continues into infinity. Watch what happens when you zoom deeper and deeper into the Mandelbrot Set here: https://www.youtube.com/watch?v=pCpLWbHVNhk. Drawing Fractals Fractals like the Mandelbrot Set are generated using formulas and computers, but there are a number of simple fractals that we can draw ourselves. 2 Sierpinski Triangle Image by Beojan Stanislaus, retrieved from: https://commons.wikimedia.org/wiki/File:Sierpinski_triangle.svg Use the template and the steps below to draw this fractal: 1. Start with an equilateral triangle. 2. Connect the midpoints of all three sides. This will create one upside down triangle and three right-side up triangles. 3. Repeat from step 1 for each of the three right-side up triangles. 3 Apollonian Gasket Retrieved from: https://mathlesstraveled.com/2016/04/20/post-without-words-6/ Use the template and the steps below to draw this fractal: 1. -
A Note on Unbounded Apollonian Disk Packings
A note on unbounded Apollonian disk packings Jerzy Kocik Department of Mathematics Southern Illinois University, Carbondale, IL62901 [email protected] (version 6 Jan 2019) Abstract A construction and algebraic characterization of two unbounded Apollonian Disk packings in the plane and the half-plane are presented. Both turn out to involve the golden ratio. Keywords: Unbounded Apollonian disk packing, golden ratio, Descartes configuration, Kepler’s triangle. 1 Introduction We present two examples of unbounded Apollonian disk packings, one that fills a half-plane and one that fills the whole plane (see Figures 3 and 7). Quite interestingly, both are related to the golden ratio. We start with a brief review of Apollonian disk packings, define “unbounded”, and fix notation and terminology. 14 14 6 6 11 3 11 949 9 4 9 2 2 1 1 1 11 11 arXiv:1910.05924v1 [math.MG] 14 Oct 2019 6 3 6 949 9 4 9 14 14 Figure 1: Apollonian Window (left) and Apollonian Belt (right). The Apollonian disk packing is a fractal arrangement of disks such that any of its three mutually tangent disks determine it by recursivly inscribing new disks in the curvy-triangular spaces that emerge between the disks. In such a context, the three initial disks are called a seed of the packing. Figure 1 shows for two most popular examples: the “Apollonian Window” and the “Apollonian Belt”. The num- bers inside the circles represent their curvatures (reciprocals of the radii). Note that the curvatures are integers; such arrangements are called integral Apollonian disk pack- ings; they are classified and their properties are still studied [3, 5, 6]. -
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. -
Mathematics of the Extratropical Cyclone Vortex in the Southern
ACCESS Freely available online y & W OPEN log ea to th a e im r l F C o f r e o c l Journal of a a s n t r i n u g o J ISSN: 2332-2594 Climatology & Weather Forecasting Case Report Mathematics of the Extra-Tropical Cyclone Vortex in the Southern Atlantic Ocean Gobato R1*, Heidari A2, Mitra A3 1Green Land Landscaping and Gardening, Seedling Growth Laboratory, 86130-000, Parana, Brazil; 2Aculty of Chemistry, California South University, 14731 Comet St. Irvine, CA 92604, USA; 3Department of Marine Science, University of Calcutta, 35 B.C. Road Kolkata, 700019, India ABSTRACT The characteristic shape of hurricanes, cyclones, typhoons is a spiral. There are several types of turns, and determining the characteristic equation of which spiral CB fits into is the goal of the work. In mathematics, a spiral is a curve which emanates from a point, moving farther away as it revolves around the point. An “explosive extra-tropical cyclone” is an atmospheric phenomenon that occurs when there is a very rapid drop in central atmospheric pressure. This phenomenon, with its characteristic of rapidly lowering the pressure in its interior, generates very intense winds and for this reason it is called explosive cyclone, bomb cyclone. It was determined the mathematical equation of the shape of the extratropical cyclone, being in the shape of a spiral called "Cotes' Spiral". In the case of Cyclone Bomb (CB), which formed in the south of the Atlantic Ocean, and passed through the south coast of Brazil in July 2020, causing great damages in several cities in the State of Santa Catarina. -
Euclidean Geometry
Euclidean Geometry Rich Cochrane Andrew McGettigan Fine Art Maths Centre Central Saint Martins http://maths.myblog.arts.ac.uk/ Reviewer: Prof Jeremy Gray, Open University October 2015 www.mathcentre.co.uk This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. 2 Contents Introduction 5 What's in this Booklet? 5 To the Student 6 To the Teacher 7 Toolkit 7 On Geogebra 8 Acknowledgements 10 Background Material 11 The Importance of Method 12 First Session: Tools, Methods, Attitudes & Goals 15 What is a Construction? 15 A Note on Lines 16 Copy a Line segment & Draw a Circle 17 Equilateral Triangle 23 Perpendicular Bisector 24 Angle Bisector 25 Angle Made by Lines 26 The Regular Hexagon 27 © Rich Cochrane & Andrew McGettigan Reviewer: Jeremy Gray www.mathcentre.co.uk Central Saint Martins, UAL Open University 3 Second Session: Parallel and Perpendicular 30 Addition & Subtraction of Lengths 30 Addition & Subtraction of Angles 33 Perpendicular Lines 35 Parallel Lines 39 Parallel Lines & Angles 42 Constructing Parallel Lines 44 Squares & Other Parallelograms 44 Division of a Line Segment into Several Parts 50 Thales' Theorem 52 Third Session: Making Sense of Area 53 Congruence, Measurement & Area 53 Zero, One & Two Dimensions 54 Congruent Triangles 54 Triangles & Parallelograms 56 Quadrature 58 Pythagoras' Theorem 58 A Quadrature Construction 64 Summing the Areas of Squares 67 Fourth Session: Tilings 69 The Idea of a Tiling 69 Euclidean & Related Tilings 69 Islamic Tilings 73 Further Tilings -
Exploring Fractal Dimension
MATH2916 A Working Seminar University of Sydney School of Mathematics and Statistics Exploring Fractal Dimension Dibyendu Roy SID:480344308 June 2, 2019 MATH2916 Exploring Fractal Dimension Dibyendu Roy 1 Motivations We all have an intuitive understanding of roughness, and can easily tell that a jagged rock is rougher than a marble. We can similarly understand that the Koch curve is "rougher" than a straight line. To make this definition of "roughness" or "fractal-ness" more rigorous, we introduce the idea of fractal dimension. What would such a dimension be defined as? It makes sense to attempt to define such a "dimen- sion" to fill the gaps in the standard integers that we use to define dimension conventionally. We know that an object in one dimension is a line and an example of a two dimensional object is a square. But what would an example of a 1.26 dimensional object look like? In this text we will explore the nature of fractal dimension culminating in a rigorous definition that can be applied to any object. 2 Compass dimension 2.1 The coastline paradox Let us imagine that we are are a cartographer trying to find the length of the coastline of Britain. As the coastline is not a regular mathematically defined shape it would make sense for us to try and find a series of approximations that would converge to the true value after a large number of iterations. Let us consider the following method for evaluating the perimeter of a shape. We take a compass (or more appropriately a divider) and open it up to a fixed distance s.