Notices of the American Mathematical Society
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- Volume 72 | Number 5 | May 2025
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What Is ...
Short, non-technical articles offering orientation to varied subjects.
September 2007
- WHAT IS...a Higgs Bundle?
Steven B. Bradlow, Oscar García-Prada, and Peter B. Gothen
June/July 2007
- WHAT IS...a Galois Representation?
Mark Kisin
May 2007
- WHAT IS...an Infinite Swindle?
Valentin Poénaru
April 2007
- WHAT IS...a Tropical Curve?
Grigory Mikhalkin
March 2007
- WHAT IS...a Minimal Model?
János Kollár
February 2007
- WHAT IS...a Young Tableau?
Alexander Yong
January 2007
- WHAT IS...a Projective Structure?
William M. Goldman
December 2006
- WHAT IS...a Quasiconformal Mapping?
Juha Heinonen
November 2006
- WHAT IS...Turing Reducibility?
Martin Davis
October 2006
- WHAT IS...a Bad End?
Charles L. Epstein
September 2006
- WHAT IS...a Quasicrystal
Marjorie Senechal
August 2006
- WHAT IS...a Strange Attractor?
David Ruelle
June/July 2006
- WHAT IS...a Coarse Space?
John Roe
May 2006
- WHAT IS...Percolation?
Harry Kesten
April 2006
- WHAT IS...a Syzygy?
Roger Wiegand
March 2006
- WHAT IS...a Graph Minor
Bojan Mohar
January 2006
- WHAT IS...a Quantum Group?
shahn Majid
December 2005
- WHAT IS...a Random Matrix?
Persi Diaconis
November 2005
- WHAT IS...a Grõbner Basis?
Bernd Sturmfels
October 2005
- WHAT IS...a Pseudoholomorphic Curve?
Simon K. Donaldson
September 2005
- WHAT IS...a Lefschetz Pencil?
Robert E. Gompf
August 2005
- WHAT IS...a Compacton?
Philip Rosenau
June/July 2005
- WHAT IS...Property τ?
Alex Lubotzky
May 2005
- WHAT IS...a Horseshoe?
Michael Shub
March 2005
- WHAT IS...a Dimer?
Richard Kenyon and Andrei Okounkov
February 2005
- WHAT IS...a Brane?
Gregory W. Moore
January 2005
- WHAT IS...an Open Book?
Emmanuel Giroux
December 2004
- WHAT IS...a Flip?
Alessio Corti
November 2004
- WHAT IS...a Motive?
Barry Mazur
October 2004
- WHAT IS...a Topos?
Luc Illusie
September 2004
- WHAT IS...a Grope?
Peter Teichner
August 2004
- WHAT IS...an Expander
Peter Sarnak
June/July 2004
- WHAT IS...an Operad?
Jim Stasheff
May 2004
- WHAT IS...a Free Lunch?
Freddy Delbaen and Walter Schachermayer
April 2004
- WHAT IS...a Billiard?
Yakov Sinai
February 2004
- WHAT IS...a Quasi-morphism?
D. Kotschick