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Jeffrey C Lagarias

from Ann Arbor, MI
Age ~75

Jeffrey Lagarias Phones & Addresses

  • 2132 Brockman Blvd, Ann Arbor, MI 48104 (734) 997-9434
  • 2457 Mulberry Ct, Ann Arbor, MI 48104 (630) 297-1744
  • 1502 Golden Ave, Ann Arbor, MI 48104 (734) 769-3903
  • 133 Summit Ave, Summit, NJ 07901 (908) 277-6017
  • Gillette, NJ

Publications

Isbn (Books And Publications)

Mathematical Developments Arising from Linear Programming: Proceedings

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Author

Jeffrey C. Lagarias

ISBN #

0821851217

Wikipedia

Jeffrey Lagarias

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Jeffrey Clark Lagarias (born November, 1949 in Pittsburgh, Pennsylvania, USA) is a mathematics professor at the University of Michigan. ...

Us Patents

Method And Apparatus For Optimizing System Operational Parameters Through Affine Scaling

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US Patent:
49145630, Apr 3, 1990
Filed:
Aug 22, 1986
Appl. No.:
6/899046
Inventors:
Narendra K. Karmarkar - North Plaintfield NJ
Jeffrey C. Lagarias - Summit NJ
Assignee:
AT&T Bell Laboratories - Murray Hill NJ
International Classification:
G06F 1520
US Classification:
364148
Abstract:
Method and apparatus for optimizing the operational state of a system employing iterative steps that approximately follow a projective scaling trajectory or an affine scaling trajectory, or curve, in computing from its present state, x. sub. 0 to a next state x. sub. 1 toward the optimum state. The movement is made in a transformed space where the present (transformed) state of the system is at the center of the space, and the curve approximation is in the form of a power series in the step size. The process thus develops a sequence of tentative states x. sub. 1, x. sub. 2, x. sub. n. . . . It halts when a selected suitable stopping criterion is satisfied, and assigns the most recent tentative state as the optimized operating state of the system.

Method And Apparatus For Optimizing System Operational Parameters

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US Patent:
47440279, May 10, 1988
Filed:
Aug 22, 1986
Appl. No.:
6/899191
Inventors:
David A. Bayer - New York NY
Narendra K. Karmarkar - North Plainfield NJ
Jeffrey C. Lagarias - Summit NJ
Assignee:
American Telephone and Telegraph Company, AT&T Bell Laboratories - Murray Hill NJ
International Classification:
G06F 1520
H04Q 366
H04M 700
US Classification:
364402
Abstract:
Method and apparatus for optimizing the operational state of a system employing iterative steps that approximately follow a projective scaling trajectory or an affine scaling trajectory, or curve, in computing from its present state, x. sub. 0 to a next state x. sub. 1 toward the optimum state. The movement is made in a transformed space where the present (transformed) state of the system is at the center of the space, and the curve approximation is in the form of a power series in the step size. The process thus develops a sequence of tentative states x. sub. 1, x. sub. 2, x. sub. n. . . . It halts when a selected suitable stopping criterion is satisfied, and assigns the most recent tentative state as the optimized operating state of the system.

Method And Apparatus For Providing Error-Tolerant Storage Of Information

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US Patent:
58927751, Apr 6, 1999
Filed:
Dec 27, 1995
Appl. No.:
8/579525
Inventors:
Nuggehally S. Jayant - Gillette NJ
Jeffrey C. Lagarias - Summit NJ
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
G06F 1100
US Classification:
371 21
Abstract:
The device and method according to the present invention permute the order of signals representing information intended for storage in a memory. The signal ordering is permuted prior to or at the time of storage in the memory such that when the information or data is stored in the permuted order, it is more tolerant to errors or defects that existed or may occur in the memory.

Method And Apparatus For Providing Error-Tolerant Communication Of Information

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US Patent:
59995661, Dec 7, 1999
Filed:
Sep 19, 1996
Appl. No.:
8/715983
Inventors:
Jeffrey C. Lagarias - Summit NJ
Nuggehally S. Jayant - Gillette NJ
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
H04B 1700
H04B 346
H04Q 120
US Classification:
375224
Abstract:
The device and method according to the present invention permute the order of signals representing information intended for transmission over a communication medium. The signal ordering is permuted prior to or at the time of transmission over the communication medium such that when the information or data is transmitted in the permuted order, it is more tolerant to data corrupting defects, such as a faulty communications line, or events, such as an electromagnetic pulse, that exist or may occur during the communication process.

Method And Apparatus For Optimizing System Operational Parameters Through Projective Transformations

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US Patent:
48947733, Jan 16, 1990
Filed:
Aug 22, 1986
Appl. No.:
6/899109
Inventors:
Jeffrey C. Lagarias - Summit NJ
Assignee:
American Telephone and Telegraph Company, AT&T Bell Laboratories - Murray Hill NJ
International Classification:
G06F 1520
US Classification:
364402
Abstract:
Method and apparatus for optimizing the operational state of a system employing iterative steps that approximately follow a projective scaling trajectory or an affine scaling trajectory, or curve, in computing from its present state, x. sub. 0 to a next state x. sub. 1 toward the optimum state. The movement is made in a transformed space where the present (transformed) state of the system is at the center of the space, and the curve approximation is in the form of a power series in the step size. The process thus develops a sequence of tentative states x. sub. 1, x. sub. 2, x. sub. n. . . . It halts when a selected suitable stopping criterion is satisfied, and assigns the most recent tentative state as the optimized operating state of the system.
Jeffrey C Lagarias from Ann Arbor, MI, age ~75 Get Report