Glen Eugene Bredon (August 24, 1932 in

Fresno, California Fresno () is a major city in the San Joaquin Valley of California, United States. It is the county seat of Fresno County and the largest city in the greater Central Valley region. It covers about and had a population of 542,107 in 2020, maki ...

– May 8, 2000, in

North Fork, California North Fork (formerly Brown's and Northfork; Mono wa?ahhpY', "cedar grove") is a census-designated place (CDP) in Madera County, California, United States. As of the 2020 United States census it had a population of 3,250. It is part of the Ma ...

) was an American mathematician who worked in the area of

topology In mathematics, topology (from the Greek words , and ) is concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling, and bending; that is, without closing ...

Education and career

Bredon received a bachelor's degree from Stanford University in 1954 and a master's degree from

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of high ...

in 1955. In 1958 he wrote his PhD thesis at Harvard (''Some theorems on transformation groups'') under the supervision of Andrew M. Gleason. Starting in 1960 he worked as a professor at the

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant u ...

and since 1969 at

Rutgers University Rutgers University (; RU), officially Rutgers, The State University of New Jersey, is a public land-grant research university consisting of four campuses in New Jersey. Chartered in 1766, Rutgers was originally called Queen's College, and was ...

, until he retired in 1993, after which he moved to

. From 1958 to 1960 and 1966/67 he was at the

Institute for Advanced Study The Institute for Advanced Study (IAS), located in Princeton, New Jersey, in the United States, is an independent center for theoretical research and intellectual inquiry. It has served as the academic home of internationally preeminent schola ...

. The Bredon cohomology of topological spaces under action of a topological group is named after him. In the late 1980s, he wrote the program DOS.MASTER for Apple II computers. He is the author of the programs Merlin (a

macro assembler Macro (or MACRO) may refer to: Science and technology * Macroscopic, subjects visible to the eye * Macro photography, a type of close-up photography * Image macro, a picture with text superimposed * Monopole, Astrophysics and Cosmic Ray Observato ...

) and ProSel for Apple machines.

Personal life

In 1963, while at Berkeley, he married folk singer

Anne Bredon Anne Leonard Bredon (born Anne Loeb; September 7, 1930 – November 9, 2019) was an American folk singer, best known for composing the song " Babe I'm Gonna Leave You" while she was a student at University of California, Berkeley in the late 1950 ...

(née Loeb), with whom he had two children, Aaron and Joelle.

Apple software

Bredon is the author of the programs Merlin (a

) and ProSel for Apple machines. DOS.MASTER (also: DOS Master) is a program for Apple II computers which allows Apple DOS 3.3 programs to be placed on a

hard drive A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magne ...

or 3½" floppy disk and run from

ProDOS ProDOS is the name of two similar operating systems for the Apple II series of personal computers. The original ProDOS, renamed ProDOS 8 in version 1.2, is the last official operating system usable by all 8-bit Apple II series computers, and w ...

. Bredon wrote it as a commercial program during the late 1980s where it experienced widespread success; it was released into the

public domain The public domain (PD) consists of all the creative work to which no exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly waived, or may be inapplicable. Because those rights have expired, ...

by his family after the author's death.Public.Domain.notice.txt
on apple2.org.za DOS.MASTER was created as a result of Apple Computer's abandonment of the DOS 3.3

operating system An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also i ...

and its subsequent replacement by ProDOS. Apple provided a program to copy files from DOS 3.3 volumes to new ProDOS volumes; however, programs written for DOS 3.3 did not run on ProDOS volumes. DOS.MASTER enabled a widely installed base of previously ProDOS incompatible programs written for DOS 3.3 to be run under ProDOS. DOS.MASTER took a large ProDOS partition, formatted it as a file, and then created a series of DOS 3.3 volumes within that file. The program allowed the user to create one of four DOS 3.3 volume sizes: 140 KB (the standard capacity of an Apple II 5¼" floppy disk), 160 KB, 200 KB, or 400 KB (the maximum that DOS 3.3 could address). Up to 255 of these volumes could be created on the larger ProDOS partition, space allowing, essentially simulating a very large stack of virtual floppy disk drives.

Works

* * *''Equivariant Cohomology Theories'',

Lecture Notes in Mathematics ''Lecture Notes in Mathematics'' is a book series in the field of mathematics, including articles related to both research and teaching. It was established in 1964 and was edited by A. Dold, Heidelberg and B. Eckmann, Zürich. Its publisher is Sp ...

, Springer Verlag, 1967 * * * * *''Topology and Geometry, Graduate Texts in Mathematics'', Springer Verlag 1993, 1996 *

References

External links

About Glen Bredon – In Memoriam
{{DEFAULTSORT:Bredon, Glen 1932 births 2000 deaths People from Fresno, California Mathematicians from California 20th-century American mathematicians Stanford University alumni Harvard University alumni University of California, Berkeley College of Letters and Science faculty Rutgers University faculty Institute for Advanced Study visiting scholars Topologists