Glen Eugene Bredon (August 24, 1932 in

Fresno, California Fresno (; ) is a city in the San Joaquin Valley of California, United States. It is the county seat of Fresno County, California, Fresno County and the largest city in the greater Central Valley (California), Central Valley region. It covers a ...

– May 8, 2000, in

North Fork, California North Fork (formerly Brown's and Northfork; Mono wa?ahhpY', "cedar grove") is an unincorporated community in Madera County, California, United States. As of the 2020 United States census it had a population of 3,250. For statistical purposes ...

) was an American mathematician who worked in the area of

topology Topology (from the Greek language, Greek words , and ) is the branch of mathematics concerned with the properties of a Mathematical object, geometric object that are preserved under Continuous function, continuous Deformation theory, deformat ...

Education and career

Bredon received a bachelor's degree from

Stanford University Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...

in 1954 and a master's degree from

Harvard University Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyma ...

in 1955. In 1958, he wrote his PhD thesis at Harvard (''Some theorems on transformation groups'') under the supervision of

Andrew M. Gleason Andrew Mattei Gleason (19212008) was an American mathematician who made fundamental contributions to widely varied areas of mathematics, including the solution of Hilbert's fifth problem, and was a leader in reform and innovation in teaching a ...

. 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 university, public Land-grant university, land-grant research university in Berkeley, California, United States. Founded in 1868 and named after t ...

and since 1969 at

Rutgers University Rutgers University ( ), officially Rutgers, The State University of New Jersey, is a Public university, public land-grant research university consisting of three campuses in New Jersey. Chartered in 1766, Rutgers was originally called Queen's C ...

, 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) is an independent center for theoretical research and intellectual inquiry located in Princeton, New Jersey. It has served as the academic home of internationally preeminent scholars, including Albert Ein ...

. 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 Apple II ("apple Roman numerals, two", stylized as Apple ][) is a series of microcomputers manufactured by Apple Computer, Inc. from 1977 to 1993. The Apple II (original), original Apple II model, which gave the series its name, was designed ...

computers. He is the author of the programs

Merlin The Multi-Element Radio Linked Interferometer Network (MERLIN) is an interferometer array of radio telescopes spread across England. The array is run from Jodrell Bank Observatory in Cheshire by the University of Manchester on behalf of UK Re ...

macro assembler In computing, assembly language (alternatively assembler language or symbolic machine code), often referred to simply as assembly and commonly abbreviated as ASM or asm, is any low-level programming language with a very strong correspondence bet ...

) 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 1950s ...

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

Software

Bredon is the author of the programs

) and ProSel for Apple machines. DOS.MASTER (also: DOS Master) is a program for Apple II computers which allows

Apple DOS 3.3 Apple DOS is the disk operating system for the Apple II computers from late 1978 through early 1983. It was superseded by ProDOS in 1983. Apple DOS has three major releases: DOS 3.1, DOS 3.2, and DOS 3.3; each one of these three releases was foll ...

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 hard disk drive platter, pla ...

or 3½"

floppy disk A floppy disk or floppy diskette (casually referred to as a floppy, a diskette, or a disk) is a type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined with a ...

and run from

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

. 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 exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly Waiver, waived, or may be inapplicable. Because no one holds ...

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 and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...

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 Springer Science+Business Media, commonly known as Springer, is a German multinational publishing company of books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing. Originally founded in 1842 in ...

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 American topologists