Ethan Akin
 Position

Professor
 ethanakin@earthlink.net
 Office
 NAC 6/287A
 Office phone
 (212) 6505136
Biography
Back when dinosaurs roamed Manhattan, I was an undergraduate at City College, taking classes with Jesse Douglas, among others, and graduating in 1965. After my PhD at Princeton (1969), I taught at University of California, Berkeley from Fall, 1968 through Spring, 1970. In the Fall of 1970 I returned to City College where I have been teaching ever since, aging slightly. Akin 1, Akin 2, Akin 3, Akin 4, Akin 5
Research
I work in the topological part of dynamical systems theory. Below I have posted pdf files of some introductory material describing two books, "The General Topology of Dynamical Systems" (1993) and "Recurrence in Topological Dynamics: Furstenberg Families and Ellis Actions" (1997) as well as two monographs "Simplicial Dynamical Systems" (1999) and "Dynamics of Topologically Generic Homeomorphisms" (2003). The survey of topological dynamics is my  rather idiosyncratic  view of the subject. It is in the Encyclopedia of Complexity and Systems Science (2009).
My work in population genetics is represented by an old paper: "Cycling in Simple Genetic Systems" (1982).
Tourist's Guide to The General Topology of Dynamical Systems
Recurrence in Topological Dynamics (Introduction)
Simplicial Dynamical Systems (Introduction)
The Dynamics of Topologically Generic Homeomorphisms (Introduction)
Topological Dynamics: A Survey
Cycling in Simple Genetic Systems
Of perhaps more general interest is "Why the 3X+1 Problem Is Hard?" (2004). This is an introduction to the simple to state, but unsolved Collatz Problem.
Why is the 3X + 1 Problem Hard?
"The Spiteful Computer" (1992) is a description of an odd determinism paradox.
Following the recent work of Press and Dyson there have been advances in the study of the Prisoner's Dilemma: "The Iterated Prisoner's Dilemma: Good Strategies and Their Dynamics" (2013).
In addition, I have posted my contribution, "In Defense of Mindless Rote" (2001), to the current Math Wars over the teaching of mathematics at precollege levels.
Finally, because of my work in mathematical applications to population genetics, I became interested in the controversy about Intelligent Design. In "Theses on Johnson" (2001) I defend at length the view that the ID position is wrong but interesting, as opposed to wrong and stupid, which is the general opinion among biologists.
Class Documents
Math 39104 KL Homework and Course Notes
Math 346 E Homework and Course Notes
Teaching
 Fall 2019: Math 37500LM, TuTh 10:00AM11:40AM in NAC 4/115
 Fall 2019: Math 39100K, TuTh 8:00AM9:15AM in NAC 0/201
Documents
 Math375Fall2019Course Info and Homework.pdf
 Math375Fall2019HW solutionsfull.pdf
 Math375Fall2019post01.pdf
 Math375Fall2019post02.pdf
 Math375Fall2019Quiz16 MidtermSolutions.pdf
 Math375Fall2019ReviewSheetfull.pdf
 Math391Fall2019Course Info.pdf
 Math391Fall2019Homework.pdf
 Math391Fall2019HW solutions1.pdf
 Math391Fall2019HW solutions2.pdf
 Math391Fall2019HW solutions3.pdf
 Math391Fall2019post01.pdf
 Math391Fall2019post02.pdf
 Math391Fall2019post03.pdf
 Mathe391Fall2019Test 12 solutions.pdf
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