Complexity of Fractran and Productivity J¨ org Endrullis1 , Clemens Grabmayer2 , and Dimitri Hendriks1

Source URL: www.phil.uu.nl

• Mathematics
• Theory of computation
• Models of computation
• Turing machine
• Computability
• Halting problem
• Collatz conjecture
• Turing completeness
• Register machine
• Theoretical computer science
• Computer science
• Computability theory

SOLUTION OF THE HEAWOOD MAP-COLORING PROBLEM* BY GERHARD RINGEL AND J. W. T. YOUNGS UNIVERSITY OF CALIFORNIA (SANTA CRUZ)

Source URL: www.ncbi.nlm.nih.gov

• Topological graph theory
• Conjectures
• Heawood conjecture
• Four color theorem
• Gerhard Ringel
• Torus
• Cayley graph
• Manifold
• Graph
• Graph theory
• Mathematics
• Graph coloring

Enumerating ABC triples Willem Jan Palenstijn Universiteit Leiden, Universiteit Antwerpen

Source URL: www.math.leidenuniv.nl

• Conjectures
• Nonassociative algebra
• Group theory
• Quasigroup
• Mathematics
• Number theory
• Abc conjecture

SOME APPLICATIONS OF HOMOGENEOUS DYNAMICS TO NUMBER THEORY

Source URL: people.brandeis.edu

• Mathematics
• Lattice
• Ergodic theory
• Oppenheim conjecture
• Connection
• Spectral theory of ordinary differential equations
• Modular form
• Abstract algebra
• Lie groups
• Mathematical analysis

[4] M. Einsiedler, A. Katok, E. Lindenstrauss. Invariant measures and the set of exceptions to Littlewood’s conjecture. Ann. of Math[removed]), no. 2, 513–560.

Source URL: page.math.tu-berlin.de

THE 3x +1 PROBLEM AND DIRECTED GRAPHS Paul J. Andaloro Department of Mathematics, Kent State University, Stark Campus, North Canton, OH 44720

Source URL: www.fq.math.ca

• Number theory
• Matching
• Pólya enumeration theorem
• Szemerédi regularity lemma
• Mathematics
• Collatz conjecture
• Conjectures

IS THE CONTINUUM HYPOTHESIS A DEFINITE MATHEMATICAL PROBLEM?

Source URL: math.stanford.edu

• Proof theory
• Continuum hypothesis
• Forcing
• Hypotheses
• Kurt Gödel
• Conjecture
• Set theory
• Decidability
• Truth
• Mathematical logic
• Logic
• Mathematics

SERGE LANG David E. Rohrlich

Source URL: math.bu.edu

• Number theorists
• Diophantine geometry
• Nicolas Bourbaki
• Elliptic curve
• Number theory
• Rational point
• Abelian variety
• Conjecture
• Serge Lang
• Abstract algebra
• Mathematics
• Algebraic geometry

The Hilbert–Smith conjecture for three-manifolds John Pardon 9 April 2012; Revised 22 January 2013

Source URL: math.stanford.edu

• Differential topology
• Homeomorphisms
• Smooth functions
• Mapping class group
• Immersion
• Incompressible surface
• Loop theorem
• Fundamental group
• Analytic torsion
• Topology
• 3-manifolds
• Geometric topology

REVIEW OF C. REIHER’S SOLUTION TO THE KEMNITZ CONJECTURE

Source URL: math.nju.edu.cn