Calendar of Events Mathematica Journal - The Mathematica Journal

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mastCalendar.41.mj

7/21/99

THE

11:05 AM

Mathematica Journal ®

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Calendar of Events

Editorial Editor: Troels Petersen ([email protected]) Managing Editor:Patty Enrado ([email protected]) Production Editor/Art Director: Peter Altenberg ([email protected]) Technical Editor (Electronic Supplement): Robert J. Korsan ([email protected]) Columnists: Paul Abbott, Nancy Blachman, James Freeman, Todd Gayley, Roman Maeder Consulting Editor:Alan Zeichick ([email protected])

Editorial Advisory Board Steve Christensen (MathSolutions Inc.) Richard Gaylord (Univ. of Illinois) Donald Glaser (Univ. of California, Berkeley) Donald Knuth (Stanford Univ.) Silvio Levy (The Geometry Center, Univ. of Minn.) David Lovelock (Univ. of Arizona) Jerry Marsden (Univ. of California, Berkeley) Robert Moore (Univ. of Washington, Seattle) Alfred van der Poorten (Macquarie Univ.) Bill Press (Harvard Univ.) Sam Savage (Univ. of Chicago) Dana Scott (Carnegie Mellon Univ.) Lawrence M. Seiford (Univ. of Mass., Amherst) Lynn Steen (St. Olaf College) Francis Sullivan (Nat’l Inst. of Sci. and Tech.) Bill Thurston (MRSI and Univ. of Cal, Berkeley) Hal Varian (Univ. of Michigan) Rob Wolff (Apple Computer Inc.) Stephen Wolfram (Wolfram Research Inc.)

Customer Service 1-800-829-5446 or 904-445-4662. Fax: 904-445-2728 E-mail: [email protected]

Corporate Offices 600 Harrison Street, San Francisco, CA 94107 415-905-2200, fax 415-905-2234 Publisher: Cathy Passage ([email protected]) Group Publisher: Regina Starr Ridley Group Director: Donald A. Pazour Advertising Sales: Pam Grossman (415-905-2256) Advertising Coordinator: Leo LaMattina Director of Production: Andrew A. Mickus Group Circulation Director: Gina Oh Circulation Manager: Sara DeCarlo Reprints: Andrea Varni Newsstand Manager: Pam Santoro Chairman of the Board: Graham J.S. Wilson President/CEO: Marshall W. Freeman Senior Vice Presidents: Thomas L. Kemp, H. Verne Packer, Wini D. Ragus, Stephen G. Stoneburn Vice Presidents: Charles H. Benz, Leonard E. Haas, Vicki L. Masseria, Andrew A. Mickus, Jerry M. Okabe, Donald A. Pazour Chief Financial Officer: Andy Ambrose The Mathematica Journal (ISSN 1047-5974) is published quarterly by Miller Freeman Inc., a member of the United Newspapers Group, 600 Harrison St., San Francisco, CA 94107, (415) 905-2200. U.S. annual subscription rates: $55, with Electronic Supplements, $85. All international subscriptions are in U.S. dollars. Canadian/Mexican subscription rates (via airmail): Individuals, $87, with Electronic Supplements, $117. Single copy and back-issue sales price: $14.95. Second-class postage is paid at San Francisco, CA. Postmaster:Send address changes to The Mathematica Journal, 600 Harrision St., San Francisco, CA 94107. The Mathematica Journal is an independent publication of Miller Freeman Inc., and is not affiliated with Wolfram Research Inc., the developer of Mathematica. Mathematica is a registered trademark of Wolfram Research Inc., licensed for use by Miller Freeman Inc. Mathematica is not associated with Mathematica Inc., Mathematica Policy Research Inc., or MathTech Inc. Entire issue contents copyright © 1994, Miller Freeman Inc. All rights reserved. Material in this publication and in its electronic supplement may not be reproduced in any form without permission of the publisher. The opinions expressed in the Journal are the authors’, and do not necessarily reflect those of the authors’ employers, the editors, or the publishers of the Journal.

March

May

Association for Computing Machinery Computer Science Conference

Comdex/Windows World

March 8-11 Phoenix Civic Plaza Phoenix, AZ (508) 443-3330

FOSE ‘94 March 22-24 Washington Convention Center Washington, D.C. (703) 683-5369

May 23-26 Georgia World Congress Center Atlanta, GA (617) 449-6600

June PC Expo June 28-30 Jacob Javits Convention Center New York, N.Y. (201) 346-1400

April Boston Computer Society MegaMeeting April 9-10 Clark Center, University of Massachusetts Boston, MA (617) 252-0600

National Council of Teachers of Mathematics Annual Meeting April 13-15 Indiana Convention Center and Hoosier Dome Indianapolis, IN (703) 620-9840

Mathematica Developer Conference April 21-23 Wolfram Research Inc. Champaign, IL (217) 398-0747

July Teaching Formal Methods Curriculum Development Workshop July 30-August 5 Hamilton College Clinton, N.Y. [email protected]

October GovCom ‘94 October 11-13 Washington Convention Center Washington, D.C. (703) 683-4486

U.S. Postal Service STATEMENT OF OWNERSHIP, MANAGEMENT AND CIRCULATION (Required by 39 U.S.C. 3685) 1A. Title of Publication: Mathematica Journal. 1B. Publication Number: 10475974. 2. Date of Filing: October 1, 1993. 3. Frequency of Issue: Quarterly. 3A. No. of Issues Published Annually: 4. 3B. Annual Subscription Price: $55.00. 4. Complete Mailing Address of Known Office of Publication: Miller Freeman Inc., 600 Harrison St., San Francisco, CA 94107. 5. Complete Mailing Address of Headquarters of General Business Offices of the Publisher: Miller Freeman Inc., 600 Harrison St., San Francisco, CA 94107. 6. Full Names and Complete Mailing Address of Publisher, Editor, and Managing Editor: Publisher: Regina Starr Ridley, Miller Freeman Inc., 600 Harrison St., San Francisco, CA 94107. Editor: Alan Zeichick, Miller Freeman Inc., 600 Harrison St., San Francisco, CA 94107. Managing Editor: None. 7. Owner: Miller Freeman Inc., 600 Harrison St., San Francisco, CA 94107, a wholly owned subsidiary of United Newspapers plc, Ludgate House, 245 Blackfriars Road, London SE1 9UY ENGLAND. 8. Known Bondholders, Mortgagees, and Other Security Holders Owning or Holding 1 Percent or More of Total Bonds, Mortgages or Other Securities: None. 9. Does not apply. 10. Extent and Nature of Circulation: Average Number of Copies Each Issue During Preceding 12 Months: A. Total Number of Copies:7,855. B. Paid and/or Requested Circulation: 1. Sales through dealers and carriers, street vendors, and counter sales: 600. 2. Mail subscription: 4,805. C. Total Paid and/or Requested Circulation: 5,405. D. Free Distribution by Mail, Carrier, or Other Means Samples, Complimentary, and Other Free Copies: 500. E. Total Distribution:5,905. F. Copies Not Distributed: 1. Office use, left over, unaccounted, spoiled after printing: 1,250. 2. Return from news agents: 700. G. TOTAL: 7,855. 10. Extent and Nature of Circulation: Actual Number of Copies of Single Issue Published Nearest to Filing Date A. Total Number of Copies: 8,285. B. Paid and/or Requested Circulation: 1. Sales through dealers and carriers, street vendors, and counter sales: 900. 2. Mail subscription: 5,475. C. Total Paid and/or Requested Circulation: 6,375. D. Free Distribution by Mail, Carrier, or Other Means Samples, Complimentary, and Other Free Copies: 100. E. Total Distribution: 6,475. F. Copies Not Distributed. 1. Office use, left over, unaccounted, spoiled after printing: 1,479.. 2. Return from news agents: 331. G. TOTAL: 8,285. 11. I certify that the statements made by me above are correct and complete. Signature and Title of Editor, Publisher, Business Manager, or Owner: (Alan L.. Zeichick, Editorial Director/Assoc. Publisher).

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Correction In the Graphics Gallery of Volume 3, issue 4, Figure 17 was reproduced incorrectly. The correct figure appears below.

The figure illustrates the action of the exponential function on the Riemann sphere. The rectangles on the top sphere are mapped to the rectangles on the bottom sphere.