Roger C. Alperin

I am a professor on the faculty of the Department of Mathematics, 

San Jose State University, located in downtown 

San Jose, California.

My Recent Courses (click here for the plug-in-- Acrobat Reader)

  • Math 32-Calculus 3    
  • Math 42-Discrete Math    
  • Math 70-Finite Math    
  • Math 104-History of Math    
  • Math 113-Differential Geometry    
  • Math 115-Geometry and Transformations    
  • Math 126-Number Theory     
  • Math 128a-Abstract Algebra I    
  • Math 128b-Abstract Algebra II    
  • Math 129a-Linear Algebra
  • Math 129b-Advanced Linear Algebra    
  • Math 211-Projective Geometry    
  • Math 221-Graduate Algebra    
  • Math 226-Number Theory    
  • CS 154-Formal Languages    
  • CS 254-Theory of Computation    

    • Isometric Hel-to-cat

    RECENT PUBLICATIONS

    Group Theory

  • Platonic Triangles of Groups, Experimental Mathematics, January 1999
  • The Boundary of the Gieseking Tree in Hyperbolic Three-Space Topology and Its Applications, May 1999
  • Solvable Groups of Exponential Growth Groups-Korea '98, De Gruyter, January 2000
  • Uniform Exponential Growth of Polycyclic Groups , Geometria Dedicata 2002
  • Schottky Lemma for Nonpositively Curved Singular Spaces , Geometria Dedicata 2002
  • Uniform Exponential Growth, Actions on Trees and GL_2 , 2002, AMS Contemporary Math. 298
  • Nonvanishing of entropy for lattices in Lie groups of rank one , Int. J. Alg. and Comp., Nov. 2005
  • Splitting Theorem for Linear Polycyclic Groups , March 2005

    • Algebra and Number Theory

  • The Quartic Surface of Perfect Hexahedra Rocky Mountain J., March 2001
  • Rationals and the Modular Group , MAA Monthly, 1999
  • The Modular Tree of Pythagoras , MAA Monthly, November 2005
  • On the Magnus Function , August 1998
  • Remarks on a Problem of Eisenstein JP Journal of Algebra & Number Theory, January 2007
  • A Characterization of Finite Rings March 2004

    • Mathematical Origami

  • The Mathematics of Origami, New York Journal of Mathematics, July 2000
  • Mathematical Origami and Alhazen's Problem & Origami Heptagon , 3rd International Meeting of Origami(3OSME), A. K. Peters, 2002
  • Grand Tour of Pedals of Conics , Forum Geometricorum 2004
  • Totally Real Pentagon , January 2004
  • Trisections and Totally Real Origami , MAA Monthly 2005
  • One-, Two- and Multifold Origami Axioms , (with Robert J. Lang) Proccedings of 4th OSME Conference-September 2006, AKPeters
  • Totally Real Heptagon , Jan. 2007
  • Cube Edge Colorings , July 2007

    • More links to some of my other interests and their sites: Pythagorean Triples Applet, Magic Eye Stereograms, Life in Hell, Conference Photos, math conferences, Geometry Junkyard, hiking, virtual Vatican , Geogebra , origami, Epley's maneuver (BPPV), quasicrystals, religion, Yosemite, Math News, finance , poem for JackieO, factoring and number theory, Fermat's Last Theorem again, curves, Opera, giant Malaysian insects, reggae, Theoretical Computer Science on the Web, Walt Whitman

    Some excellent search engines:

  • MathSciNet
  • MAA Journals
  • CS
  • Front
  • Eric's Treasures

    • alperin@math.sjsu.edu

    Department of Mathematics
    San Jose State University
    San Jose, California, 95192, USA
    		    Office Hours Spring '08
    MW: 10:45-11:30; MW: 2:45-4; M: 4-5 or by appt
    239 Duncan Hall
    Phone: (408) 924-5066
    Fax: (408) 924-5080

    Created: Oct 7 1998