Seminars
Graduate Colloquium
Talks presented by students are marked by *.
2011-2012
| Nov 9 | Stan Gudder Probability problems |
| Nov 2 | Tim Trujillo * Higher Dimensional Ramsey Theory |
| Oct 26 | Florian Sobieczky The blind ant and the myopic ant in the labyrinth |
| Oct 19 | Alvaro Arias Operator algebras |
| Oct 12 | Ronnie Pavlov Undecidability and computability in symbolic dynamics |
| Oct 5 | Zhe Liu An introduction to operator algebras, unbounded operators, and their relations to physics |
| Sep 21 | Dennis Pace * Axiom of Choice: Equivalences and Applications |
2011-2012
| May 17 | Christian Westhof * The Arrival of the Truth Table |
| May 4 | David Ellerman (University of California at Riverside) Interpreting Quantum Mechanics: The Objective Indistinctness Vision of Quantum Reality Based on the Logic of Partitions |
| Apr 27 | Mark Greer * Sylow Theory for Commutative Automorphic Loops |
| Apr 20 | Drew Ash * Ergodic and Weak-Mixing Transformations |
| Apr 13 | Jimmy Thorne * A better integral |
| Apr 6 | Rick Ball Truncated vector lattices |
| Mar 9 | Timothy Trujillo * The Topological Ramsey Space H^2 |
| Mar 2 | George Herrmann * Sequence, Nets and Moore-Smith Convergence |
| Feb 10 | Thomas French * Spatial Voting Theory as a Predictive Model for Elections |
| Jan 20 | Natasha Dobrinen The Ellentuck space and Ramsey ultrafilters |
| Nov 11 | Drew Ash * A word on Sarkovskii's Theorem |
| Nov 4 | Timothy Trujillo * Ultraproducts and Nonstandard Models of Arithmetic |
| Oct 28 | Stan Gudder Quantum probability theory |
| Oct 21 | Alvaro Arias Continuous and non-continuous linear maps in norm spaces and Banach spaces |
| Sep 30 | Jerry Lodder (New Mexico State) Teaching Mathematics from Historical Sources |
| Sep 23 | Sean Cox (Muenster, Germany) The Tree Property and elementary embeddings |
| Sep 16 | Natasha Dobrinen Some notions in set theory |
2010-2011
| May 20 | Yaodong Xiang * An introduction to Black-Scholes equation |
| May 6 | Jeff Farmer Why math is real: Three short stories |
| Apr 29 | Kyle Pula * Approximate transversals of latin squares (PhD defense) |
| Apr 22 | Mark Greer * Some varities of diassociative loops - structures and constructions |
| Apr 15 | Nawal Alznad * T-uniformly continuous functions on a flow |
| Apr 1 | Frederic Latremoliere Irreducible covariant representations of automorphic actions of finite groups on C *-algebras |
| Mar 25 | Gabriel Giron-Garnica * Dynkin pi-lambda theorem |
| Mar 11 | Andrew Linshaw (Darmstadt Technical University, Germany) Introduction to vertex algebras and some connections with classical invariant theory |
| Feb 11 | Jan Mycielski (CU Boulder) Set theory and Learning theory |
| Feb 4 | Natasha Dobrinen An overview of set theory |
| Jan 28 | Nic Ormes Self-inducing minimal Cantor systems |
| Jan 21 | Petr Vojtechovsky A mathematical result is born! |
| Nov 14 | Timothy Trujillo * Ultrafilter mappings and their Dedekind cuts |
| Nov 5 | Nichole Carlson (University of Colorado Denver) Opportunities in biostatistics |
| Oct 29 | Jeff Farmer Where counting comes from: Developments in research on early mathematics learning |
| Oct 22 | Michael Kinyon A gentle introduction to nonassociativity |
| Oct 15 | Bart Kastermans (University of Colorado Boulder) (Maximal) Cofinitary Groups |
| Oct 8 | Ronnie Pavlov Shifts of finite type and entropy in one and two dimensions |
| Oct 1 | Kyle Pula * Large partial transversals of small latin squares |
| Sep 24 | Daniel Van Der Vieren The Rubik's cube as a Vigenere-transposition cryptosystem |
| Sep 17 | Natasha Dobrinen Introduction to Ramsey theory |
2009-2010
| May 27 | Sheila Miller (US Military Academy, West Point) Free left distributive algebras |
| May 14 | Nathan McNew * Efficient realization of nonzero spectra by polynomial matrices |
| May 7 | Brett Werner * Strong orbit equivalence and residuality |
| Apr 30 | Riquelmi Cardona Fuentes * On widest empty |
| Apr 23 | Stan Gudder Quantum probability theory |
| Apr 16 | Rick Ball reflections on reflections |
| Apr 9 | Jim Hagler Bases in Banach spaces |
| Apr 2 | Nic Ormes The conjugacy problem for shifts of finite type |
| Mar 5 | Petr Vojtechovsky Graphs with large girth and chromatic number |
| Feb 19 | Man-Duen Choi (University of Toronto), Non-commutative magic everywhere |
| Feb 15 | Andrzej Dudek (Carnegie Mellon University) On generalized Ramsey numbers of Erdos-Rogers and Folkman |
| Feb 12 | Marius Ionescu (University of Connecticut) Entropy calculations in fractal dynamical systems |
| Feb 8 | Ronnie Pavlov (University of British Columbia) Shifts of finite type and entropy in one and two dimensions |
| Feb 5 | Greg Oman (Ohio University) Jonsson modules |
| Jan 29 | Alvaro Arias Commutant lifting theorem |
| Jan 22 | Ales Drapal (Charles University in Prague, Czech Republic) Quadratic sieve |
| Nov 13 | Frederic Latremoliere Compact quantum metric spaces |
| Nov 6 | Timothy Trujillo * Ultrafilters on $\omega$ |
| Oct 30 | Michael Kinyon Loops and 3-nets |
| Oct 23 | Annette Locke * Thesis defense |
| Oct 16 | Alexander Kechris (California Institute of Technology) The complexity of classification problems in ergodic theory |
| Oct 9 | Clifton E. Ealy, Jr. (Western Michigan University) On profinite loops |
| Oct 2 | Ales Drapal (Charles University in Prague, Czech Republic) Cryptography: The mathematics and the curriculum |
| Sep 25 | Natasha Dobrinen Boolean algebras |
| Sep 18 | Katherine Thompson (University of Vienna, Austria) Simple axioms, a labyrinth of universes |
2008-2009
| Oct 24-31 | Paul Truman Hopf Algebras In Galois Module Theory |
| Oct 17 | Tim Trujillo * Attractors for Nonlinear Reaction-Diffusion Equations in Unbounded Domains.* |
| Oct 9 | Allegra Reiber K-theory of categories and Bivariant theories II |
| Oct 2 | Allegra Reiber K-theory of categories and Bivariant theories I |
| Sep 26 | Kyle Pula * Transversals and their generalizations in Latin squares* |
| Sep 19 | Dan Daly * Reduced decompositions, repetitions, and permutation patterns* |
2007-2008
| May 30 | Nic Ormes Continued fractions |
| May 23 | Annette Locke * The Banach space HT and its characteristics |
| May 16 | Jonathan Von Stroh * Dilations, compressions, and the von Neumann inequality |
| May 9 | Dan Daly * Reduced decompositions with few repetitions and permutation patterns |
| May 2 | Yan Mayster * Minimax approximation of 2D points using step functions |
| Apr 25 | Sarah Bailey Frick (Ohio State) Ergodic invariant measures and Limited Scope adic transformations |
| Apr 18 | Kyle Pula * Generalizing the Hall-Paige conjecture |
| Apr 11 | Rick Ball Introduction to pointfree topology |
| Apr 4 | Watching the movie "Hakase No Aishita Suushiki" ("The Professor and His Beloved Equation") |
| Mar 7 | Mark Greer * Turbo codes |
| Feb 29 | Dan Daly * Connections between reduced decompositions and permutation patterns |
| Feb 22 | Brett Werner * Kakutani equivalence in minimal Cantor systems |
| Feb 8 | Aditya Nagrath * Properties of scattered lattices and the introduction of a meet semilattice duality (thesis defense) |
| Feb 1 | Andrew Dykstra (Colorado State) The weak equivalence relation in symbolic dynamics |
| Jan 25 | Astrid an Heuf (New South Wales) C-algebras associated to transformation groups |
| Jan 18 | Alvaro Arias Introduction to mathematical finance |
| Jan 11 | Deb Carney Flatland the movie |
| Nov 9 | Jenya Kirshtein * On the uniqueness of the weight enumerator of a perfect code |
| Nov 2 | Nic Ormes Tillings: Symmetric and Asymmetric |
| Oct 26 | Michael Kinyon Applications of automated reasoning to problems in quasigroup theory and loop theory |
| Oct 19 | Brett Werner * Entropy of Shifts of Finite Type (SFT) |
| Oct 12 | Poonam Singh * Fixed point theorems in uniform spaces II |
| Oct 5 | Poonam Singh * Fixed point theorems in uniform spaces I |
| Sep 28 | Nathan McNew * Inductive limits of ordered groups and continued fractions |
| Sep 21 | Sarah Campbell Inductive limits of groups |
2006-2007
| Jun 1 | Dan Daly * Permutation pattern avoidance |
| May 25 | Sarah Law 3Sum Hard Problems |
| May 11 | Brett Werner Substitution Systems (and their Entropy) to Bratteli Diagrams |
| May 4 | Jeff Farmer (Northern Colorado) What does a mathematician bring to teacher education? |
| Apr 13 | Jenya Kirshtein * Finite-difference solutions of the problem of biphase filtration in the porous medium |
| Apr 6 | Aditya Nagrath * The Jordan-Holder chain condition for semimodular lattices |
| Mar 9 | Shawn O?Donoghue * The Weierstrass approximation theorem |
| Mar 2 | Brett Werner * Bratteli diagrams and ordered groups |
| Feb 23 | Sarah Law * The ellipsoid method |
| Feb 16 | Petr Vojtechovsky Combinatorial problems as dynamical systems |
| Jan 19 | Kyle Pula * Gallai multigraphs |
| Jan 12 | Teiko Heinonen (Turku, Finland) Approximately repeatable measurements |
| Nov 17 | Petr Vojtechovsky Codes of variable length with a view toward Shannon's Noiseless Theorem |
| Nov 10 | Shlomo Reisner (Haifa) From regular polygons to algorithms for polytope approximation |
| Nov 4 | Michael Kinyon How to add vectors |
| Oct 27 | Brett Werner * Ordered groups of Bratteli diagrams |
| Oct 20 | Nic Ormes An introduction to chaos theory |
| Oct 13 | Aditya Nagrath * Scattered lattices II |
| Oct 6 | Aditya Nagrath * Scattered lattices |
| Sep 29 | Fernando Tohme (Departamento de Economia - Universidad Nacional del Sur, CONICET, Argentina) Formal limitations in economic theory and the alternative set theory AFA - + AD + AC |
| Sep 22 | Jonathan Poritz (Colorado State, Pueblo) Pure math in the news: Perelman and Poincare |
2005-2006
| May 26 | Joel Cohen Prime numbers and powers of 2: A computational perspective |
| May 19 | Aditya Nagrath * Representation of distributive lattices II |
| May 12 | Kurt Koltko A gauge theory of CPT transformations |
| May 5 | Cy Holladay * Queen domination |
| Apr 28 | Oscar Hasbun * Fast matrix multiplication II |
| Apr 21 | Jim Hagler Grothendieck inequality |
| Apr 17 | Merab Gogberashvili (Andronikashvili Institute of Physics, Tbilisi, Georgia) Octonionic geometry |
| Apr 14 | Stan Gudder Why quantum computers can do things ordinary computers cannot |
| Mar 31 | Alvaro Arias Stone-Weierstrass theorem |
| Mar 10 | Aditya Nagrath * Birkhoff's Theorem - Representation of distributive lattices |
| Mar 3 | Oscar Hasbun Fast matrix multiplication |
| Feb 24 | Rick Ball D5-T5 theorem |
| Feb 17 | Mark Tomforde (William and Mary) C*-algebras of directed graphs |
| Feb 10 | Adriana Nenciu (Florida) Number of character tables of finite groups |
| Feb 3 | Michael Kinyon (Indiana U South Bend) The Coquecigrue of a Leibniz Algebra: Recent Progress |
| Jan 27 | Rick Ball A little lattice theory |
| Jan 20 | Petr Vojtechovsky Sphere packings and lattices |
| Jan 6 | Kyle Pula * Mutually orthogonal Latin squares |
| Nov 18 | Trent Hampton On Riemann Hypothesis |
| Nov 11 | Wojciech Kosek (Colorado College) Dynamical methods in combinatorial number theory: history and some new results about prime numbers |
| Nov 4 | Sarah Law * An introduction to queuing theory |
| Oct 28 | Tricia Winning * Euclid's parallel postulate and the discovery of hyperbolic geometry |
| Oct 14 | Alvaro Arias Marriage theorem and decomposition of measures |
| Oct 7 | Claudio Delrieux (Universidad Nacional del Sur, Argentina) Fractal objects at the intersection of mathematics and computer science |
| Sep 30 | Nic Ormes Fractals ? In between dimensions |
| Sep 23 | Rick Ball Selling pizza II |
| Sep 16 | Rick Ball Selling pizza |
2004-2005
| May 20 | Jonathan Von Stroh RSA cryptography and theoretical quantum implications |
| May 13 | Giorgio Ottaviani (U Florence, Italy) What is computational algebraic geometry? |
| May 6 | Cy Holladay * Knight's tours |
| Apr 29 | Bill Cherowitzo (UC Denver) On generalizing the concept of a conic |
| Apr 22 | Aditya Nagrath On downward order continuous and Priestley spaces |
| Apr 15 | Aditya Nagrath A dreaded counterexample |
| Apr 8 | Alvaro Arias Matrix inequalities |
| Apr 1 | Stan Payne (UC Denver) Quadratic equations over finite fields |
| Feb 25 | Sarah Law * Moebius maps |
| Feb 18 | Jim Hagler The dollar auction |
| Feb 11 | Frank Schroeck Entropy |
| Feb 4 | Kyle Pula * Polya theory of counting II |
| Jan 21 | Kyle Pula * Polya theory of counting I |
| Jan 14 | Dan Daly * Designs and projective planes |
| Jan 7 | Cy Holladay * Logic and formality |
| Nov 17 | Kyle Pula * Introduction to combinatorial design theory |
| Nov 12 | Chris Rasmussen (San Diego State University) A brief introduction to mathematics education research and an illustrative example |
| Nov 5 | Aditya Nagrath * Priestley spaces II |
| Oct 29 | Aitya Nagrath * Priestley spaces |
| Oct 22 | Sarah Law * The art gallery theorem |
| Oct 15 | Nic Ormes Entropy and symbolic dynamics |
| Oct 8 | Stan Gudder Entropy |
| Oct 1 | Petr Vojtìchovský Matrix games |
| Sep 24 | Alvaro Arias Introduction to cryptography |
2003-2004
| May 28 | Rick Ball On Stone-Weierstrass theorem |
| May 21 | Petr Vojtìchovský Projective plane of order 2 and its many disguises |
| May 14 | Aditya Nagrath * Priestley spaces with a few accumulation points II |
| May 7 | Aditya Nagrath * Priestley spaces with a few accumulation points I |
| Apr 30 | Alvaro Arias Antisymmetric tensor products and singular values |
| Apr 23 | Alvaro Arias Majorization of vectors in R n and eigenvalue estimates |
| Apr 16 | Nic Ormes Symbolic dynamics and the spectra of nonnegative matrices |
| Apr 9 | Stan Gudder On Kadison's theorem |
| Mar 5 | Brett Werner * Introduction to discrete dynamical systems |
| Feb 27 | Jennifer Proal * Knots |
| Feb 20 | Kimberly Wey * Banach-Tarski paradox |
| Feb 13 | Charles Holland (Bowling Green) Divisible ordered groups: A counterexample |
| Feb 6 | Nic Ormes Continuous fractions |
| Jan 30 | Jim Hagler Approximating real numbers by rational numbers |
| Jan 16 | Petr Vojtìchovský Magic squares |
| Nov 14 | Rick Ball On well-ordered sets II |
| Nov 7 | Mario Lopez The power of duality |
| Oct 31 | Rick Ball On well-ordered sets |
| Oct 24 | Nic Ormes Period 3 implies chaos |