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Four precious jewels
 AUSTRALASIAN CONFERENCE ON COMBINATORIAL MATHEMATICS AND COMBINATORIAL COMPUTING
, 2015
"... My topic is four remarkable mathematical objects: I the (Erdős–Rényi) random graph, or Rado’s graph; I the rational numbers, as ordered set; I the Urysohn metric space; I the pseudoarc. In each case, the object can be constructed and studied by methods of finite combinatorics (usually some varia ..."
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My topic is four remarkable mathematical objects: I the (Erdős–Rényi) random graph, or Rado’s graph; I the rational numbers, as ordered set; I the Urysohn metric space; I the pseudoarc. In each case, the object can be constructed and studied by methods of finite combinatorics (usually some variant on Fraı̈ssé’s amalgamation method); and they in turn contribute to areas of finite combinatorics such as Ramsey theory, as well as further afield in topological dynamics.
SALLY JEWELL, Secretary
"... solar/photographs/line_focus_solar_collector). A motherboard connected to eight microboards in a microphone array; photograph from the National Institute of Standards and Technology ..."
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solar/photographs/line_focus_solar_collector). A motherboard connected to eight microboards in a microphone array; photograph from the National Institute of Standards and Technology
ABSTRACT
"... Circling heaven, this decay is your illwill Cruelty, your attribute so perennial O earth! If they cleave your chest In your bosom you hide a precious jewel! Ruba’iyat of Omar Khayyam (ca. 10481131) ..."
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Circling heaven, this decay is your illwill Cruelty, your attribute so perennial O earth! If they cleave your chest In your bosom you hide a precious jewel! Ruba’iyat of Omar Khayyam (ca. 10481131)
BEGINNERS 9 THE GOLDEN RATIO; COMPUTATIONAL CONSIDERATIONS
"... "Geometry has two great t r e a s u r e s: one is the Theorem of Pythagoras; the other, the division of a line into extreme and mean ratio. The first we may compare to a m e a s u r e of gold; the second we may name a precious jewel " — so wrote Kepler (15711630) [1]. ..."
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"Geometry has two great t r e a s u r e s: one is the Theorem of Pythagoras; the other, the division of a line into extreme and mean ratio. The first we may compare to a m e a s u r e of gold; the second we may name a precious jewel " — so wrote Kepler (15711630) [1].
SALLY JEWELL, Secretary U.S. Geological Survey
, 2012
"... For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit ..."
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For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit
© IDOSI Publications, 2009 A Simple Construction of the Golden Ratio
"... Abstract: Geometry has two great treasures. One of them is Pythagorian Theorem and the other is division of line segment by equal and average ratio. We can call the first one “a portion of gold ” and the other “a precious jewel”. Keppler’s idea has led us to how we could find the golden ratio in a t ..."
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Abstract: Geometry has two great treasures. One of them is Pythagorian Theorem and the other is division of line segment by equal and average ratio. We can call the first one “a portion of gold ” and the other “a precious jewel”. Keppler’s idea has led us to how we could find the golden ratio in a
Australasian Conference on Combinatorial Mathematics and Combinatorial Computing
, 2015
"... Four precious jewels My topic is four remarkable mathematical objects: I the (Erdős–Rényi) random graph, or Rado’s graph; I the rational numbers, as ordered set; I the Urysohn metric space; I the pseudoarc. In each case, the object can be constructed and studied by methods of finite combinatorics ..."
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Four precious jewels My topic is four remarkable mathematical objects: I the (Erdős–Rényi) random graph, or Rado’s graph; I the rational numbers, as ordered set; I the Urysohn metric space; I the pseudoarc. In each case, the object can be constructed and studied by methods of finite
THE PIOUS SELF IS A JEWEL IN ITSELF: AGENCY AND TRADITION IN THE PRODUCTION OF
"... Copyright © 2010 ..."
Action, Or the Fungibility of Computation
, 1998
"... Introduction Physical entropy measures amount of information; here I'll argue that physical action measures amount of computation. My approach will be an impressionistic one: motivation, metaphors, circumstantial evidence, toy examples. This is a still quite unsettled area of research (Jaynes[ ..."
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come and gone, but Hamilton's principle of least action still shines among our most precious jewels. But perhaps the reason that these principles have survived such physical upheavals is that after all they are not strictly physical principles! To me, they appear to be the expression, in a
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