Notices of the American Mathematical Society Is Unteer and Staff Activities That Are Organized Mostly Through Its Committee Structure
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1979 Annual Report of the Toronto Transit Com Through the Farebox and Other Revenues
TORONTO TRANSIT COMMISSION ANNUAL REPORT TO THE MUNICIPALITY OF METROPOLITAN TORONTO 1979 ' I TORONTO TRANSIT COMMISSION COMMISSIONERS JULIAN PORTER, Q.C., Chairman KARL L. MALLETIE, Vice Chairman PAUL GODFREY, Commissioner JEFFERY S. LYONS, Q.C., Commissioner ALAN TONKS, Commissioner JULIAN PORTER OFFICIALS R. MICHAEL WARREN, Chief General Manager R.M. WARREN JOHN T. HARVEY, General Manager- Operations PATRICK J. McCANN, General Manager Engineering and Construction KARL L. MALLETTE J.G. McGUFFIN JAMES G. McGUFFIN, General Secretary LLOYD 0 . MORLEY, Treasurer and Comptroller W. GRAHAM CHASE, General Counsel J.T. HARVEY PAUL GODFREY L.O. MORLEY P.J . McCANN JEFFERY S. LYONS W.G. CHASE ALANTONKS 2 June~ ; 1980 will continue to be heavily influenced by general infla Paul V. Godfrey, Chairman tion, and fare increases will probably continue to be and Members of the Council of the necessary in order to maintain a reasonable balance Municipality of Metropolitan Toronto between operating subsidies contributed by Metro Ladies and Gentlemen: Toronto and the Province, and revenue raised internally The 1979 Annual Report of the Toronto Transit Com through the farebox and other revenues. This issue has mission is presented for the approval of the Council of been addressed as part of the study undertaken by a . the Municipality of Metropolitan Toronto. joint Metro-TTC task force which culminated in the 1979 was an encouraging year for the Commission. report "Transit in the 1980's: A New Direction:' Although fares were increased 16.7% in March of 1979, Improvements in the system continued to be made in more riders rode the system in 1979 than in 1978, 1979. -
Papers Published And/Or Accepted for Publication in 2018-2019 (List Incomplete)
Papers published and/or accepted for publication in 2018-2019 (list incomplete) Allington, G. R. H., Fernandez-Gimenez M. E., Chen Belt (ADB). In: (G Gutman, J Chen, GM Henebry, J, and Brown and D G 2018: Combining M Kappas, eds.) Landscape Dynamics across participatory scenario planning and systems Drylands of Greater Central Asia: People, modeling to identify drivers of future sustainability Societies and Ecosystems. Springer. Chapter 10. on the Mongolian Plateau. Ecology and Chen Y, Tao Y, Cheng Y, Ju W, Ye J, Hickler T, Liao Society 23(2):9. C, Feng L and Ruan H 2018: Great uncertainties https://doi.org/10.5751/ES-10034-230209 in modeling grazing impact on carbon An S, Chen X, Zhang XY, Yan D and Henebry GM sequestration: a multi-model inter-comparison in 2018. An exploration of terrain effects on land temperate Eurasian Steppe Environ. Res. surface phenology across the Qinghai-Tibetan Lett. 13 075005 Plateau using Landsat ETM+ and OLI Chen Y, Fei X, Groisman P, Sun Z, Zhang J, and Qin data Remote Sensing 10(7):1069. Z, 2019: Contrasting policy shifts influence the https://doi.org/10.3390/rs10071069 pattern of vegetation production and C Bastos A , Peregon A, Gani ÉA, Khudyaev S, Yue C, sequestration over pasture systems: a regional- Li W, Gouveia CM and Ciais P 2018 Influence of scale comparison in Temperate Eurasian Steppe. high-latitude warming and land-use changes in the Agricultural Systems, Accepted. early 20th century northern Eurasian CO2 sink Deppermann A, Balkovič J, Bundle S-C, di Fulvio F, Environ. Res. -
Abragam a & Bleaney B. Electron Paramagnetic Resonance of Transition Ions. Oxford, England: Oxford University Press, 1970. 7
® CC/NUMBER 28 This Week's Citation Classic JULY 13, 1992 Abragam A & Bleaney B. Electron paramagnetic resonance of transitionions. Oxford, England: Oxford University Press, 1970. 700 p. [Ecole Normale. Paris, France, and Clarendon Laboratory, University of Oxford. England] This book covers both experimental and theoretical His proposal was for a gigantic vol- aspects of electron paramagnetic resonance, for ume, including spin resonance stud- the 3d, 4d, 5d, 4f, and 5f transition groups. It has ies of ions in semiconductors and at remained the standard work on the subject for 20 years. [The SCI® indicates that this book has been defect sites. This would have been far cited in more than 3,160 publications.] larger than the 700 pages that were published by the Oxford University Press in 1970. Electron Paramagnetic Resonance As professor at the Ecole Normale in Paris, he gave a different set of lec- Brebis Bleaney tures every year. (He complained that if Clarendon Laboratory he lectured on his own subject of mag- University of Oxford netic resonance, the students were not Oxford OX1 3PU interested, while if he lectured on one England of their subjects, they knew much more The first experiments on electron about it than he did.) Nevertheless, he paramagnetic resonance in Oxford had ready sets of lecture notes cover- 1 were made by Desmond M.S. Bagguley ing the theory of electron paramag- in 1945 and extended to low tempera- netic resonance of transition ions. 2 tures by R.P. Penrose and myself in These formed the second part of our 1947. Anatole Abragam came to Ox- book, apart from a chapter on the Jahn- ford in 1948 from Paris, and his doc- Teller effect that he added later, before toral thesis under Maurice Pryce de- I had finished writing the first part of veloped the theory of magnetic experimental aspects. -
THE RIEMANN HYPOTHESIS BERNARD RUSSO University Of
THE RIEMANN HYPOTHESIS BERNARD RUSSO University of California, Irvine PART I THE PRIME NUMBER THEOREM JULY 29, 2010 PACIFIC SUMMER UNSOLVED PROBLEMS SEMINAR PART II THE RIEMANN HYPOTHESIS SEPTEMBER 14, 2010 MATH COLLOQUIUM FULLERTON COLLEGE DEPARTMENT OF MATHEMATICS BEGINNING OF PART I “book report” “PRIME OBSESSION” JOHN DERBYSHIRE 2003 PRESENTATION OF CREDENTIALS Bernard Russo 1965 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 Irving Segal 1940 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 Irving Segal 1940 Einar Hille 1918 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 Irving Segal 1940 Einar Hille 1918 M. Riesz 1912 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 Irving Segal 1940 Einar Hille 1918 M. Riesz 1912 L. Fejer 1902 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 Irving Segal 1940 Einar Hille 1918 M. Riesz 1912 L. Fejer 1902 H. A. Schwarz 1864 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 Irving Segal 1940 Einar Hille 1918 M. Riesz 1912 L. Fejer 1902 H. A. Schwarz 1864 Karl Weierstrass 1854—E. E. Kummer 1831 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 Irving Segal 1940 Einar Hille 1918 M. Riesz 1912 L. Fejer 1902 H. A. Schwarz 1864 Karl Weierstrass 1854—E. E. Kummer 1831 C. Gudermann 1841—H. Scherk 1823 PRESENTATION OF CREDENTIALS Bernard Russo 1965 Henry Dye 1950 Irving Segal 1940 Einar Hille 1918 M. Riesz 1912 L. Fejer 1902 H. A. Schwarz 1864 Karl Weierstrass 1854—E. E. Kummer 1831 C. Gudermann 1841—H. -
1987 Annual Report
T.1.8/19 \ ' . Serving our ~iders PROFILE his report is dedicated to our riders, who have .T helped make the Toronto Transit Commission the most heavily used transportation system in Canada and the United States per capita. The TTC is an award-winning public transit Form2363/ Feb. 83 authority, created by the Municipality of Metropolitan Toronto Toronto Transrt Commrssion in 1954. It is responsible for public transit in Metropolitan Planning Department Toronto, which is made up of six municipalities covering Library Card 244 sq. mi. The TTC is directed by five Commissioners who are INDEXNO. T.l.8-46 appointed by Metropolitan Toronto Council. It carries 1.5 million passenger trips on an average business DATE I NAME l_ss_u_E_D-..-- RETURNED day - the equivalent of every resident taking 208 rides annu ally. With a fleet of 2, 675 buses, trolley coaches, streetcars, subway vehicles and light rapid transit vehicles, the TTC oper ates more modes of transportation than any other transit system in North America. The TTC was the first Canadian transit authority to receive an Outstanding Achievement Award from the American Public Transit Association. It has won APTA's Silver Award for passen ger and traffic safety more often than any other system in the association's history. The TTC employs about 9,300 people and has two subsidiar ies: Gray Coach Lines Limited, which operates interurban passenger and parcel bus service throughout Ontario and into the United States, and Toronto Transit Consultants Limited, which provides engineering consulting and transit expertise to clients world-wide. The TTC's operating budget is based 68 per cent on revenues acquired mostly from fares and 32 per cent on equal subsidies from Metropolitan Toronto and the Province of Ontario. -
United States Patent [19] [11] E Patent Number: Re
United States Patent [19] [11] E Patent Number: Re. 33,629 Palmer et a1. [45] Reissued Date of Patent: Jul. 2, 1991 [54] NUMERIC DATA PROCESSOR 1973, IEEE Transactions on Computers vol. C-22, pp. [75] Inventors: John F. Palmer, Cambridge, Mass; 577-586. Bruce W. Ravenel, Nederland, Co1o.; Bulman, D. M. "Stack Computers: An Introduction," Ra? Nave, Haifa, Israel May 1977, Computer pp. 18-28. Siewiorek, Daniel H; Bell, C. Gordon; Newell, Allen, [73] Assignee: Intel Corporation, Santa Clara, Calif. “Computer Structures: Principles and Examples," 1977, [21] Appl. No.: 461,538 Chapter 29, pp. 470-485 McGraw-Hill Book Co. Palmer, John F., “The Intel Standard for Floatin [22] Filed: Jun. 1, 1990 g-Point Arithmetic,“ Nov. 8-11, 1977, IEEE COMP SAC 77 Proceedings, 107-112. Related US. Patent Documents Coonen, J. T., "Speci?cations for a Proposed Standard Reissue of: t for Floating-Point Arithmetic," Oct. 13, 1978, Mem. [64] Patent No.: 4,338,675 #USB/ERL M78172, pp. 1-32. Issued: Jul. 6, 1982 Pittman, T. and Stewart, R. G., “Microprocessor Stan Appl. No: 120.995 dards,” 1978, AFIPS Conference Proceedings, vol. 47, Filed: Feb. 13, 1980 pp. 935-938. “7094-11 System Support For Numerical Analysis,“ by [51] Int. Cl.-‘ ........................ .. G06F 7/48; G06F 9/00; William Kahan, Dept. of Computer Science, Univ. of G06F 11/00 Toronto, Aug. 1966, pp. 1-51. [52] US. Cl. .................................. .. 364/748; 364/737; “A Uni?ed Decimal Floating-Point Architecture For 364/745; 364/258 The Support of High-Level Languages,‘ by Frederic [58] Field of Search ............. .. 364/748, 745, 737, 736, N. -
Faster Math Functions, Soundly
Faster Math Functions, Soundly IAN BRIGGS, University of Utah, USA PAVEL PANCHEKHA, University of Utah, USA Standard library implementations of functions like sin and exp optimize for accuracy, not speed, because they are intended for general-purpose use. But applications tolerate inaccuracy from cancellation, rounding error, and singularities—sometimes even very high error—and many application could tolerate error in function implementations as well. This raises an intriguing possibility: speeding up numerical code by tuning standard function implementations. This paper thus introduces OpTuner, an automatic method for selecting the best implementation of mathematical functions at each use site. OpTuner assembles dozens of implementations for the standard mathematical functions from across the speed-accuracy spectrum. OpTuner then uses error Taylor series and integer linear programming to compute optimal assignments of function implementation to use site and presents the user with a speed-accuracy Pareto curve they can use to speed up their code. In a case study on the POV-Ray ray tracer, OpTuner speeds up a critical computation, leading to a whole program speedup of 9% with no change in the program output (whereas human efforts result in slower code and lower-quality output). On a broader study of 37 standard benchmarks, OpTuner matches 216 implementations to 89 use sites and demonstrates speed-ups of 107% for negligible decreases in accuracy and of up to 438% for error-tolerant applications. Additional Key Words and Phrases: Floating point, rounding error, performance, approximation theory, synthesis, optimization 1 INTRODUCTION Floating-point arithmetic is foundational for scientific, engineering, and mathematical software. This is because, while floating-point arithmetic is approximate, most applications tolerate minute errors [Piparo et al. -
Irving Kaplansky
Portraying and remembering Irving Kaplansky Hyman Bass University of Michigan Mathematical Sciences Research Institute • February 23, 2007 1 Irving (“Kap”) Kaplansky “infinitely algebraic” “I liked the algebraic way of looking at things. I’m additionally fascinated when the algebraic method is applied to infinite objects.” 1917 - 2006 A Gallery of Portraits 2 Family portrait: Kap as son • Born 22 March, 1917 in Toronto, (youngest of 4 children) shortly after his parents emigrated to Canada from Poland. • Father Samuel: Studied to be a rabbi in Poland; worked as a tailor in Toronto. • Mother Anna: Little schooling, but enterprising: “Health Bread Bakeries” supported (& employed) the whole family 3 Kap’s father’s grandfather Kap’s father’s parents Kap (age 4) with family 4 Family Portrait: Kap as father • 1951: Married Chellie Brenner, a grad student at Harvard Warm hearted, ebullient, outwardly emotional (unlike Kap) • Three children: Steven, Alex, Lucy "He taught me and my brothers a lot, (including) what is really the most important lesson: to do the thing you love and not worry about making money." • Died 25 June, 2006, at Steven’s home in Sherman Oaks, CA Eight months before his death he was still doing mathematics. Steven asked, -“What are you working on, Dad?” -“It would take too long to explain.” 5 Kap & Chellie marry 1951 Family portrait, 1972 Alex Steven Lucy Kap Chellie 6 Kap – The perfect accompanist “At age 4, I was taken to a Yiddish musical, Die Goldene Kala. It was a revelation to me that there could be this kind of entertainment with music. -
Notices: Highlights
------------- ----- Tacoma Meeting (June 18-20)-Page 667 Notices of the American Mathematical Society June 1987, Issue 256 Volume 34, Number 4, Pages 601 - 728 Providence, Rhode Island USA ISSN 0002-9920 Calendar of AMS Meetings THIS CALENDAR lists all meetings which have been approved by the Council prior to the date this issue of Notices was sent to the press. The summer and annual meetings are joint meetings of the Mathematical Association of America and the American Mathematical Society. The meeting dates which fall rather far in the future are subject to change; this is particularly true of meetings to which no numbers have yet been assigned. Programs of the meetings will appear in the issues indicated below. First and supplementary announcements of the meetings will have appeared in earlier issues. ABSTRACTS OF PAPERS presented at a meeting of the Society are published in the journal Abstracts of papers presented to the American Mathematical Society in the issue corresponding to that of the Notices which contains the program of the meeting. Abstracts should be submitted on special forms which are available in many departments of mathematics and from the headquarter's office of the Society. Abstracts of papers to be presented at the meeting must be received at the headquarters of the Society in Providence, Rhode Island, on or before the deadline given below for the meeting. Note that the deadline for abstracts for consideration for presentation at special sessions is usually three weeks earlier than that specified below. For additional information. consult the meeting announcements and the list of organizers of special sessions. -
Jfr Mathematics for the Planet Earth
SOME MATHEMATICAL ASPECTS OF THE PLANET EARTH José Francisco Rodrigues (University of Lisbon) Article of the Special Invited Lecture, 6th European Congress of Mathematics 3 July 2012, KraKow. The Planet Earth System is composed of several sub-systems: the atmosphere, the liquid oceans and the icecaps and the biosphere. In all of them Mathematics, enhanced by the supercomputers, has currently a key role through the “universal method" for their study, which consists of mathematical modeling, analysis, simulation and control, as it was re-stated by Jacques-Louis Lions in [L]. Much before the advent of computers, the representation of the Earth, the navigation and the cartography have contributed in a decisive form to the mathematical sciences. Nowadays the International Geosphere-Biosphere Program, sponsored by the International Council of Scientific Unions, may contribute to stimulate several mathematical research topics. In this article, we present a brief historical introduction to some of the essential mathematics for understanding the Planet Earth, stressing the importance of Mathematical Geography and its role in the Scientific Revolution(s), the modeling efforts of Winds, Heating, Earthquakes, Climate and their influence on basic aspects of the theory of Partial Differential Equations. As a special topic to illustrate the wide scope of these (Geo)physical problems we describe briefly some examples from History and from current research and advances in Free Boundary Problems arising in the Planet Earth. Finally we conclude by referring the potential impact of the international initiative Mathematics of Planet Earth (www.mpe2013.org) in Raising Public Awareness of Mathematics, in Research and in the Communication of the Mathematical Sciences to the new generations. -
Le Collège De France
LE COLLÈGE DE FRANCE QUELQUES DONNÉES SUR SON HISTOIRE ET SON CARACTÈRE PROPRE I. LES ORIGINES LES LECTEURS ROYAUX. — Le Collège de France doit son origine à l’institution des lecteurs royaux par le roi François Ier, en1530. L’Université de Paris avait alors le monopole de l’enseignement dans toute l’étendue de son ressort. Attachée à ses traditions comme à ses privilèges, elle se refusait aux innovations. Ses quatre facultés : Théologie, Droit, Médecine, Arts, prétendaient embrasser tout ce qu’il y avait d’utile et de licite en fait d’études et de savoir. Le latin était la seule langue dont on fît usage. Les sciences proprement dites, sauf la médecine, se réduisaient en somme au quadrivium du moyenâge. L’esprit étroit de la scolastique décadente y régnait universellement. Les écoles de Paris étaient surtout des foyers de dispute. On y argumentait assidûment ; on y apprenait peu de chose. Et il semblait bien difficile que cette corporation, jalouse et fermée, pût se réformer par elle-même ou se laisser réformer. Pourtant, un esprit nouveau, l’esprit de la Renaissance, se répandait à travers l’Europe. Les intelligences s’ouvraient à des curiosités inédites. Quelques précur- seurs faisaient savoir quels trésors de pensée étaient contenus dans ces chefs- d’œuvre de l’Antiquité, que l’imprimerie avait commencé de propager. On se reprochait de les avoir ignorés ou méconnus. On demandait des maîtres capables de les interpréter et de les commenter. Sous l’influence d’Érasme, un généreux mécène flamand, Jérôme Busleiden, venait de fonder à Louvain, en 1518, un Collège des trois langues, où l’ontraduisait des textes grecs, latins,hébreux, au grand scandale des aveugles champions d’une tradition sclérosée. -
88 Conservative, Free Market Groups and Activists Urge Passage of Comprehensive, Pro-Growth Tax Reform in 2017
88 Conservative, Free Market Groups and Activists Urge Passage of Comprehensive, Pro-Growth Tax Reform in 2017 September 14, 2017 The Honorable Paul D. Ryan The Honorable Mitch McConnell Speaker Majority Leader United States House of United States Senate Representatives S-230, The Capitol H-232, The Capitol Washington, D.C. 20510 Washington, D.C. 20515 The Honorable Steven T. Mnuchin The Honorable Gary D. Cohn United States Treasury Secretary Director, National Economic Council Department of the Treasury The White House 1500 Pennsylvania Avenue, N.W. 1600 Pennsylvania Avenue, N.W. Washington, D.C. 20220 Washington D.C. 20500 The Honorable Orrin G. Hatch The Honorable Kevin Brady Chairman Chairman Senate Committee on Finance House Committee on Ways and Means 219 Dirksen Senate Office Building 1102 Longworth House Office Building Washington, D.C. 20510 Washington, D.C. 20515 Dear Speaker Ryan, Leader McConnell, Secretary Mnuchin, Director Cohn, Chairman Hatch, and Chairman Brady: On behalf of the undersigned organizations, we write to urge passage of comprehensive, pro- growth tax reform in 2017. In the past 30 years, the tax code has expanded in size and complexity. Today, the code serves well-connected special interests, not hard working American families. After many years of inaction, Congress and the administration have a chance to fix our broken tax system this year by making it fairer, simpler, and less burdensome. There is broad consensus on the need for tax reform. With the 2018 midterm elections in sight, it is also crucial that bold policies keeping the promises made to the American people are realized soon.