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American mathematician
Henry "Hank " Wallman (1915
[1] –1992) was an American mathematician, known for his work in
lattice theory ,
dimension theory ,
topology , and
electronic circuit design .
A native of Brooklyn and a 1933 graduate of
Brooklyn College , Wallman received his Ph.D. in
mathematics from
Princeton University in 1937, under the supervision of
Solomon Lefschetz
[1]
[2] and became a faculty member at the
Massachusetts Institute of Technology , where he was associated with the
Radiation Laboratory . During
World War II he did
classified work at MIT, possibly involving
radar .
[3] In 1948, he left MIT to become a professor of
electrotechnics at the
Chalmers University of Technology in
Gothenburg ,
Sweden , which awarded him the Chalmers medal in 1980
[4] and where he eventually retired.
[3] In 1950 he was elected as a foreign member to the
Swedish Royal Academy .
[5] He was elected a member of the
Royal Swedish Academy of Engineering Sciences in 1960 and of the
Royal Swedish Academy of Engineering Sciences in 1970.
The
disjunction property of Wallman is named after Wallman, as is the
Wallman compactification , and he co-authored an important monograph on dimension theory with
Witold Hurewicz .
[6] Wallman was also a
radio enthusiast,
[3] and in the postwar period co-authored a book comprehensively documenting what was known at the time about
vacuum tube
amplification technology,
[7] including new developments such as showing how the
central limit theorem could be used to describe the
rise time of cascaded circuits. At Chalmers, Wallman helped build the Electronic Differential Analyser, an early example of an
analog computer ,
[8] and performed pioneering research in
biomedical engineering combining
video displays with
X-ray imaging.
[9]
References
^
a
b
Biography of Wallman at the
Chalmers University of Technology (in Swedish).
^
Henry Wallman at the
Mathematics Genealogy Project .
^
a
b
c The Princeton Mathematics Community in the 1930s, interviews with
Albert Tucker , transcripts
33
Archived 2015-03-10 at the
Wayback Machine ,
36
Archived 2015-03-10 at the
Wayback Machine , and
41
Archived 2015-03-10 at the
Wayback Machine .
^
Chalmers medalists ,
Chalmers University of Technology .
^ "Notes",
Bulletin of the American Mathematical Society , 56 (2): 212–215, 1950,
doi :
10.1090/S0002-9904-1950-09396-3 ; Schneckenburger, Edith R. (1950), "News and Notices",
American Mathematical Monthly , 57 (6): 433–435,
doi :
10.1080/00029890.1950.11999562 ,
JSTOR
2307663 .
^ Hurewicz, W.; Wallman, H. (1941), Dimension Theory , Princeton University Press . Reviews:
Menger, Karl (May 29, 1942), "Dimension",
Science , 95 (2474): 554–556,
doi :
10.1126/science.95.2474.554-a ;
MR
0006493 (reviewed by
Hassler Whitney ); Smith, P. A. (1942), "Dimension theory",
Bulletin of the American Mathematical Society , 48 (9): 641–642,
doi :
10.1090/S0002-9904-1942-07723-8 .
^ Valley, George E. Jr.; Wallman, Henry (1948), Vacuum Tube Amplifiers ,
MIT Radiation Laboratory Series 18,
New York : McGraw-Hill. . Reviews: Ridenour, Louis N. (1948), "Vacuum tube amplifiers", Massachusetts Institute of Technology Radiation Laboratory Series ; Giacoletto, L. J. (1949), "Institute News and Radio Notes", Proceedings of the I.R.E. , 37 (8): 907,
doi :
10.1109/JRPROC.1949.229980 ; Frankland, Scott (1998),
Vacuum tube electronics: Reviews of the major texts (PDF) , Perkins Electro-Acoustical Research Laboratory .
^ Johansson, Magnus (1996), "Early analog computers in Sweden—with examples from Chalmers University of Technology and the Swedish Aerospace Industry", IEEE Annals of the History of Computing , 18 (4): 27–33,
doi :
10.1109/85.539913 .
^
Chalmers Bioscience Program background material 2004 , Gunnar Bjursell and Catharina Hiort.
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