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Computational Verification of the 3x+1 Conjecture Computational Verification of the 3x+1 Conjecture- Results up to 2^60 by Tomás Oliveira e Silva. The 3x+1 Problem Conference Proceedings The 3x+1 Problem Conference Proceedings- Katholische Universität Eichstätt, Germany; 5--6 August 1999. On-line proceedings and group photo. Collatz Problem Collatz Problem- From Eric Weissten's World of Mathematics. Article with references and links. Collatz 3n+1 Problem Structure Collatz 3n+1 Problem Structure- Observations posted by Ken Conrow to stimulate further research. The Structure of the 3x + 1 Function The Structure of the 3x + 1 Function- Papers by Peter Schorer describing several new approaches. A Guide to the Emil Grosswald Papers A Guide to the Emil Grosswald Papers- Held at the Archives of American Mathematics, Center for American History, University of Texas at Austin. Fermat's Little Theorem Fermat's Little Theorem- Historical comments by John Cosgrave. Mathematical Manuscripts at Trinity College Cambridge Mathematical Manuscripts at Trinity College Cambridge- Includes papers of Davenport, Hardy, Littlewood, Ramanujan. Historical Essays in Number Theory Historical Essays in Number Theory- MSs by Peter Roquette. History of Arithmetic and Number Theory History of Arithmetic and Number Theory- A bibliography by D. Joyce. Discovery of a Lost Factoring Machine Discovery of a Lost Factoring Machine- Built by a French amateur, E.-O. Carissan, around 1919. Shallit, Williams and Morain include photographs and references to their paper. Factoring Fermat Numbers Factoring Fermat Numbers- Cash prizes for new factors of Fermat numbers Fn, for n = 12 through 22. Integer Factorization Integer Factorization- Paul Leyland's list of his own and other factorisations. Factorizations of Near-repdigit Numbers Factorizations of Near-repdigit Numbers- Factorizations of numbers composed of all the same digit except first and/or last. Factoring Papers Factoring Papers- Links to papers on the theory and practice of factoring. The XYYXF Project The XYYXF Project- A collaborative project to produce the factorizations of x^y + y^x for 1<y<x<101. Factorization of RSA-155 Factorization of RSA-155- Announcement of factorization of a 512-bit RSA key using the General Number Field Sieve (GNFS). FactorWorld FactorWorld- Dedicated to algorithms and computational results on integer factorization. Includes links to papers, downloadable software, and online resources. Factorization Using the Elliptic Curve Method Factorization Using the Elliptic Curve Method- Java applet that can be used to find 20- or 30-digit factors of numbers or numerical expressions up to 1000 digits long. It also com… The Factor Zone The Factor Zone- Aimed at grade school students and teachers, includes course guidelines, worksheets, and factor tables up to 600. Factoris Factoris- Online calculator that factorizes large numbers, specified by formula. Fermat Search Fermat Search- Leonid Durman's Fermat number factoring site and program. APA Resources for Students APA Resources for Students- Information for undergraduates, particularly about advanced education and possible careers in psychology and related fields. Career Decision Tree Career Decision Tree- Quiz helps undergraduates understand their options and gives information about the choices and how to pursue them. How to Apply to Clinical Psychology PhD Programs How to Apply to Clinical Psychology PhD Programs- Tips and information for all stages of applying for clinical psychology PhD programs. Based on a student's personal experience. Psyccareers Psyccareers- Articles from the APA about choosing and managing a career and considerations for graduate school. Features a jobs database. Online Psychology Career Center Online Psychology Career Center- Categorized links to information about topics such as jobs, internships, and graduate school advice. Marky Lloyd's Careers in Psychology Page Marky Lloyd's Careers in Psychology Page- Information and tip sheets for undergraduates on what they can do with an advanced degree. Advice for Undergraduates Considering Graduate School Advice for Undergraduates Considering Graduate School- Describes how to prepare and the key aspects to consider. Voyvodic, Robert Voyvodic, Robert- Canadian artist paints original landscapes and scenery in watercolor.