- 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
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 due to appear in a scientific encyclopedia.
My work in population genetics is represented by an old paper: "Cycling in Simple Genetic Systems" (1982).
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.
In addition, I have posted my contribution, "In Defense of Mindless Rote" (2001), to the current Math Wars over the teaching of mathematics at pre-college 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.
- Spring 2008: Math 20300-LL, T,H 9:30-10:45, Room 6113; F 9:30-10:20, Room 1511E; F 10:30-11:20, Room 1511A
- Spring 2008: Math 20300-MM, T,H 11:00-12:15, Room 5150; F 12:00-12:50, Room 1511E; F 1:00-1:50, Room 1511A
- Fall 2007: Math 20200-KK, T,H 8:00-9:15, Room NA 4115; F 8:00-8:50, Room NA 4115
- Fall 2007: Math 20200-MM, T,H 11:00-12:15, Room NA 6113; F 11:00-11:50, Room NA 4113
- Spring 2007: Math 34700-RS, T,H 4:00-5:40, Room 4156
- Spring 2007: Math 37500-T, T,H 6:30-7:45pm, Room 4113