## Past Events at the University of Calgary

### Past Events

- 18-Apr-09
- 19-Apr-09

Scientific Event

- 1-Apr-09
- 31-Mar-10

Scientific Event

- 26-Sep-08

The Plane With Density r^p and The Poincaré Conjecture

Putting a density (as in calculus or physics) on the plane can make for some interesting geometry. Perelman used such an idea in his proof of the Poincaré conjecture. No prerequisites. more››

Scientific Event

- 25-Sep-08

The idea of putting a density on a manifold has appeared throughout mathematics, recently in Perelman's paper on the Poincaré Conjecture. The prime example is Gauss space: R^n with Gaussian density. Despite interesting progress, the geometry of mani more››

Scientific Event

- 19-Aug-08
- 24-Aug-08

The Ninth International Conference on Quantum Communication, Measurement and Computing (QCMC)

For more information, please visit the external site: http://www.qcmc2008.org/ more››

Scientific Event

- 10-Aug-08
- 13-Aug-08

International Conference on Information Theoretic Security - ICITS 2008

For more information, please visit the external site at: http://www.iqis.org/ more››

Scientific Event

- 17-May-08
- 22-May-08

Eighth Algorithmic Number Symposium ANTS-VIII

Since their inception in 1994, the bi-annual ANTS meetings have become the premier international forum for the dissemination of new research in algorithmic number theory. The aim is to bring together leading experts in the field, as well as young res more››

Scientific Event

- 9-Apr-08

Alberta Colleges Mathematics Conference

The Alberta Colleges Mathematics Conference will give you a chance to meet with colleagues from Alberta’s post-secondary institutions primarily to discuss teaching, technology, and curriculum, and to share perspectives on experiences and common int more››

Scientific Event

- 25-Mar-08

A Computational Economics Approach to Policy Models: Applications to Natural Resources

Dr. Howitt's talk will focus on Maximum Entropy estimators and Chebychev polynomial approximations to costate functions, with examples available for download in two papers, more››

Scientific Event

- 31-Oct-07

Random projections of regular polytopes and neighborliness

If an N-dimensional regular crosspolytope is projected to a uniform random d-dimensional subspace and N is large, then the projection has strong neighborliness properties, with high probability. Strong results in this direction were recently obtai more››

Scientific Event

- 26-Oct-07

Polytopes and arrangements: diameter and curvature

By analogy with the Hirsh conjecture, we conjecture that the order of the largest total curvature of the central path associated to a polytope is the number of inequalities defining the polytope. By analogy with a result of Dedieu, Malajovich and more››

Scientific Event

- 25-Oct-07

Klee-Minty cubes and the central path

We consider a family of LO problems over the n-dimensional Klee-Minty cube and show that the central path may visit all of its vertices in the same order as simplex methods do. This is achieved by carefully adding an exponential number of redundan more››

Scientific Event

- 24-Oct-07

Pivot v/s interior point methods: pros and cons

Linear Optimization (Programming) is probably the most successful and most intensively studied model in applied mathematics. First we give a survey of the governing algorithmic principles that lead to design Pivot and Interior Point Methods (IPMs) more››

Scientific Event

- 20-Oct-07
- 21-Oct-07

The 29th Annual Alberta Statisticians' Meeting

The 29th Annual Alberta Statisticians Meeting is sponsored by the Department of Mathematics and Statistics and the Faculty of Science at the University of Calgary, and also by PIMS. This meeting serves many purpose more››

Scientific Event

- 12-Oct-07

Unsolved for over twenty-five years, a surprisingly difficult conjecture stated that a non-crossing polygonal chain of fixed-length edges in the plane can be continuously opened without crossing. Gunter Rote, Erik Demaine and I proved this Carpent more››

Scientific Event

- 11-Oct-07

Why things don't fall down - Art, geometry and engineering

Why do some geometric shapes hold together, while others are floppy and fall down? An eggshell and a convex dome are rigid, while polygons, with four or more sides of fixed length in the plane, flex. The geometric principles for convex shapes go b more››

Scientific Event

- 10-Oct-07

The geometry of rigid and non-rigid structures

Convex triangulated surfaces in three-space are rigid by Cauchy's Theorem. But what about non-convex surfaces? Some interesting recent examples of classes of non-convex surfaces have some convex-like properties, and yet are still rigid. On the oth more››

Scientific Event

- 4-Oct-07

Total Positivity and its Applications

A matrix is called totally positive (resp. totally nonnegative)if all of its minors are positive (resp. nonnegative). This important class of matrices grew out of three separate applications: Vibrating systems, interpolation, and statistics. Since more››

Scientific Event

- 4-Oct-07

Scaling, universality and spatio-temporal clustering in seismicity and rock fracture phenomena

In this talk, Dr. Davidsen will give an overview of new methods from nonlinear sciences and complex network theory to characterize temporal and spatio-temporal clustering of point processes with a particular focus on their application to seismicity a more››

Industrial Event

- 3-Sep-07

The Intuitive Geometry Day in Calgary is a one-day meeting immediately following and extending the Intuitive Geometry Workhsop (August 31-September 2, 2007) held at the Banff International Research Station. The Intuitive Geometry Day is entir more››

Scientific Event