MATHEMATICIAN
Kenneth Appel
1932 - 2013
Kenneth Appel
Kenneth Ira Appel (October 8, 1932 – April 19, 2013) was an American mathematician who in 1976, with colleague Wolfgang Haken at the University of Illinois at Urbana–Champaign, solved one of the most famous problems in mathematics, the four-color theorem. Read more on Wikipedia
Since 2007, the English Wikipedia page of Kenneth Appel has received more than 92,558 page views. His biography is available in 18 different languages on Wikipedia. Kenneth Appel is the 815th most popular mathematician (down from 720th in 2019), the 9,227th most popular biography from United States (down from 7,591st in 2019) and the 64th most popular American Mathematician.
Memorability Metrics
93k
Page Views (PV)
42.51
Historical Popularity Index (HPI)
18
Languages Editions (L)
3.87
Effective Languages (L*)
2.76
Coefficient of Variation (CV)
Page views of Kenneth Appels by language
Among MATHEMATICIANS
Among mathematicians, Kenneth Appel ranks 815 out of 823. Before him are Cleve Moler, Radhanath Sikdar, Barry Mazur, Mark Kac, Alexander Aitken, and Heinz Prüfer. After him are Yury Osipov, Elwyn Berlekamp, Volker Strassen, Curtis T. McMullen, Richard K. Guy, and Yuri Linnik.
Most Popular Mathematicians in Wikipedia
Go to all Rankings
Cleve Moler
1939 - Present
HPI: 42.62
Rank: 809
Radhanath Sikdar
1813 - 1870
HPI: 42.58
Rank: 810
Barry Mazur
1937 - Present
HPI: 42.57
Rank: 811
Mark Kac
1914 - 1984
HPI: 42.56
Rank: 812
Alexander Aitken
1895 - 1967
HPI: 42.55
Rank: 813
Heinz Prüfer
1896 - 1934
HPI: 42.55
Rank: 814
Kenneth Appel
1932 - 2013
HPI: 42.51
Rank: 815
Yury Osipov
1936 - Present
HPI: 42.49
Rank: 816
Elwyn Berlekamp
1940 - 2019
HPI: 42.46
Rank: 817
Volker Strassen
1936 - Present
HPI: 42.46
Rank: 818
Curtis T. McMullen
1958 - Present
HPI: 42.46
Rank: 819
Richard K. Guy
1916 - 2020
HPI: 42.31
Rank: 820
Yuri Linnik
1914 - 1972
HPI: 42.25
Rank: 821
Contemporaries
Among people born in 1932, Kenneth Appel ranks 411. Before him are John Jakes, Abby Dalton, Maurice Kouandété, Antonio Maspes, Luke Askew, and W. Morgan Sheppard. After him are Robert Coover, Sheree North, Ann-Sofi Pettersson, Roger Smith, Dino Bruni, and János Parti. Among people deceased in 2013, Kenneth Appel ranks 385. Before him are Janet Rowley, Costică Ștefănescu, Annette Funicello, Allan Arbus, Eero Kolehmainen, and Jacques Grimonpon. After him are Marek Špilár, Gordon Thomas, Huell Howser, Yevdokiya Mekshilo, Richard Briers, and Peter Geach.
Others Born in 1932
Go to all Rankings
John Jakes
1932 - 2023
HPI: 43.00
Rank: 405
Abby Dalton
1932 - 2020
HPI: 42.96
Rank: 406
Maurice Kouandété
1932 - 2003
HPI: 42.92
Rank: 407
Antonio Maspes
1932 - 2000
HPI: 42.80
Rank: 408
Luke Askew
1932 - 2012
HPI: 42.72
Rank: 409
W. Morgan Sheppard
1932 - 2019
HPI: 42.69
Rank: 410
Kenneth Appel
1932 - 2013
HPI: 42.51
Rank: 411
Robert Coover
1932 - Present
HPI: 42.47
Rank: 412
Sheree North
1932 - 2005
HPI: 42.47
Rank: 413
Ann-Sofi Pettersson
1932 - Present
HPI: 42.39
Rank: 414
Roger Smith
1932 - 2017
HPI: 42.37
Rank: 415
Dino Bruni
1932 - Present
HPI: 42.29
Rank: 416
János Parti
1932 - 1999
HPI: 42.29
Rank: 417
Others Deceased in 2013
Go to all Rankings
Janet Rowley
1925 - 2013
HPI: 43.01
Rank: 379
Costică Ștefănescu
1951 - 2013
HPI: 42.97
Rank: 380
Annette Funicello
1942 - 2013
HPI: 42.94
Rank: 381
Allan Arbus
1918 - 2013
HPI: 42.87
Rank: 382
Eero Kolehmainen
1918 - 2013
HPI: 42.85
Rank: 383
Jacques Grimonpon
1925 - 2013
HPI: 42.61
Rank: 384
Kenneth Appel
1932 - 2013
HPI: 42.51
Rank: 385
Marek Špilár
1975 - 2013
HPI: 42.47
Rank: 386
Gordon Thomas
1921 - 2013
HPI: 42.45
Rank: 387
Huell Howser
1945 - 2013
HPI: 42.40
Rank: 388
Yevdokiya Mekshilo
1931 - 2013
HPI: 42.40
Rank: 389
Richard Briers
1934 - 2013
HPI: 42.39
Rank: 390
Peter Geach
1916 - 2013
HPI: 42.33
Rank: 391
In United States
Among people born in United States, Kenneth Appel ranks 9,227 out of 18,182. Before him are Willis Augustus Lee (1888), Madge Bellamy (1899), Alberta Hunter (1895), Kathryn Erbe (1965), John Schofield (1831), and Lewis Howard Latimer (1848). After him are James L. Jones (1943), Robert A. M. Stern (1939), Scott Wolf (1968), Sarah Palfrey Cooke (1912), Brad Delp (1951), and Ruth Roland (1892).
Others born in United States
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Willis Augustus Lee
1888 - 1945
HPI: 42.52
Rank: 9,221
Madge Bellamy
1899 - 1990
HPI: 42.52
Rank: 9,222
Alberta Hunter
1895 - 1984
HPI: 42.52
Rank: 9,223
Kathryn Erbe
1965 - Present
HPI: 42.52
Rank: 9,224
John Schofield
1831 - 1906
HPI: 42.52
Rank: 9,225
Lewis Howard Latimer
1848 - 1928
HPI: 42.52
Rank: 9,226
Kenneth Appel
1932 - 2013
HPI: 42.51
Rank: 9,227
James L. Jones
1943 - Present
HPI: 42.51
Rank: 9,228
Robert A. M. Stern
1939 - Present
HPI: 42.51
Rank: 9,229
Scott Wolf
1968 - Present
HPI: 42.51
Rank: 9,230
Sarah Palfrey Cooke
1912 - 1996
HPI: 42.51
Rank: 9,231
Brad Delp
1951 - 2007
HPI: 42.51
Rank: 9,232
Ruth Roland
1892 - 1937
HPI: 42.51
Rank: 9,233
Among MATHEMATICIANS In United States
Among mathematicians born in United States, Kenneth Appel ranks 64. Before him are Erna Schneider Hoover (1926), Garrett Birkhoff (1911), Marston Morse (1892), Ormond Stone (1847), Cleve Moler (1939), and Barry Mazur (1937). After him are Elwyn Berlekamp (1940), Curtis T. McMullen (1958), Norman Johnson (1930), Martin David Kruskal (1925), George Mostow (1923), and Robert Daniel Carmichael (1879).
Erna Schneider Hoover
1926 - Present
HPI: 43.60
Rank: 58
Garrett Birkhoff
1911 - 1996
HPI: 43.00
Rank: 59
Marston Morse
1892 - 1977
HPI: 42.89
Rank: 60
Ormond Stone
1847 - 1933
HPI: 42.76
Rank: 61
Cleve Moler
1939 - Present
HPI: 42.62
Rank: 62
Barry Mazur
1937 - Present
HPI: 42.57
Rank: 63
Kenneth Appel
1932 - 2013
HPI: 42.51
Rank: 64
Elwyn Berlekamp
1940 - 2019
HPI: 42.46
Rank: 65
Curtis T. McMullen
1958 - Present
HPI: 42.46
Rank: 66
Norman Johnson
1930 - 2017
HPI: 42.24
Rank: 67
Martin David Kruskal
1925 - 2006
HPI: 41.99
Rank: 68
George Mostow
1923 - 2017
HPI: 41.89
Rank: 69
Robert Daniel Carmichael
1879 - 1967
HPI: 41.77
Rank: 70
