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.
December 2016
- WHAT IS... Symplectic Geometry?
Tara S. Holm
November 2016
- WHAT IS... a Blender?
Ch. Bonatti, S. Crovisier, L. J. Díaz and A. Wilkinson
October 2016
- WHAT IS...A Multiple Orthogonal Polynomial?
Andrei Martinez-Finkelshtein and Walter Van Assche
September 2016
- WHAT IS...a Leavitt path algebra?
Gene Abrams
August 2016
- WHAT IS...a Diophantine $m$-tuple?
Andrej Dujella
June/July 2016
- WHAT IS...Aperiodic Order?
David Damanik, Uwe Grimm and Michael Baake
May 2016
- WHAT IS...Nash Equilibrium?
Rajiv Sethi and Jörgen Weibull
April 2016
- WHAT IS...a Quandle?
Sam Nelson
March 2016
- WHAT IS... an Anabelian Scheme?
Kirsten Wickelgren
February 2016
January 2016
- WHAT IS...an Ergodic Transformation?
Cesar E. Silva
February 2014
- WHAT IS...Cyclic Sieving?
Victor Reiner, Dennis Stanton, and Dennis White
November 2013
- WHAT IS...a Flag Algebra?
Alexander A. Razborov
October 2013
- WHAT IS...the Leech Lattice?
Chuanming Zong
September 2013
- WHAT IS...the p-adic Mandelbrot Set?
Joseph H. Silverman
June/July 2013
- WHAT IS...a Frame?
Christopher Heil
January 2013
- WHAT IS...a Tensegrity?
Robert Connelly
December 2012
- WHAT IS...a Shimura Variety?
James S. Milne
October 2012
- WHAT IS...a Scissors Congruence?
Johan L. Dupont
September 2012
- WHAT IS...Cop Number?
Anthony Bonato
August 2012
- WHAT IS...an Octopus Decomposition?
Larry Conlon
June/July 2012
- WHAT IS...a Biholomorphic Mapping?
Eric Bedford
May 2012
- WHAT IS...an Approximate Group?
Ben Green
April 2012
- WHAT IS...Data Mining?
Mauro Maggioni
March 2012
- WHAT IS...an Affine Sphere?
Daniel J. F. Fox
February 2012
- WHAT IS...a Pseudoconvex Domain?
R. Michael Range
December 2011
- WHAT IS...a Natural Proof?
Timothy Y. Chow
October 2011
- WHAT IS...a Stationary Measure?
Alex Furman
September 2011
- WHAT IS...Thompson's Group?
J. W. Cannon and W. J. Floyd
August 2011
- WHAT IS...a Derived Stack?
Gabriele Vezzosi
June/July 2011
- WHAT IS...a Resplendent Structure?
Roman Kossak
May 2011
- WHAT IS...an Infra-nilmanifold Endomorphism?
Karel Dekimpe
April 2011
- WHAT IS...a G2-Manifold?
Spiro Karigiannis
March 2011
- WHAT IS...Equivariant Cohomology?
Loring W. Tu
February 2011
- WHAT IS...a Free Cumulant?
Jonathan Novak and Piotr Sniady
January 2011
- WHAT IS...Persistent Homology?
Shmuel Weinberger