## Colloquium

##### Thursday, March 5, 2015 at 3:30p.m.

#####
**Professor Snorre Christiansen**
(*University of Oslo*)

**Abstract:**"Finite element systems" is a framework for analysing and constructing mixed finite element spaces. The framework gives a unified presentation of known spaces such as the Raviart-Thomas-Nedelec spaces, in terms of inverse systems of differential complexes. It was introduced to construct new finite element spaces on general polytopal meshes, where it provides spaces of minimal dimension subject to the constraint of containing certain polynomials. It can also be used to construct parameter dependent spaces adapted to singular perturbations such as vanishing viscosity problems.

### Monday, 2 March 2015

#### Automorphic Forms and Number Theory

#### Reading seminar on algebraic and arithmetic geometry

*Artin's algebraization of formal moduli, V*at 5:00p.m. in VinH 209

**Chen Wan**(

*U of M Mathematics Department*)

### Tuesday, 3 March 2015

#### Geometric Analysis Learning Seminar

*Chern-Ricci flow on elliptic surfaces*at 10:00a.m. in VinH 364

**Jun Li**(

*University of Minnesota Mathematics Department*)

### Wednesday, 4 March 2015

#### Algebraic Geometry

*Extending the Landau-Ginzburg/Calabi-Yau correspondence to non-Calabi-Yau hypersurfaces in weighted projective space.*at 2:30p.m. in VinH 364

**Pedro Acosta**

In the early days of mirror symmetry, physicists noticed a remarkable relation between the Calabi-Yau geometry of a hypersurface in projective space defined by a ...
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#### PDE Seminar

*Compactness of conformal metrics with positive constant Q-curvature*at 3:35p.m. in VinH 364

**Yanyan Li**(

*Rutgers University*)

Let $(M,g)$ be an $n\ge 5$ dimensional smooth compact Riemannian manifold of positive Yamabe type, which is not conformally equivalent to the standard sphere. We ...
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#### Reading seminar on algebraic and arithmetic geometry

*Artin's algebraization of formal moduli, VI*at 5:00p.m. in VinH 209

**Chen Wan**(

*U of M Mathematics Department*)

### Thursday, 5 March 2015

#### Commutative Algebra Seminar

*Kakeya problems over finite fields*at 11:15a.m. in VinH 203A

**Daniel Erman**(

*University of Wisconsin*)

The Kakeya Needle Problem has its origins in harmonic analysis, but it has led to a number of interesting related questions about algebra and geometry ...
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#### Math Club Seminar

*Stochastic computing: when 0.5*0.3 is probably close to 0.15*at 12:20p.m. in VinH 570

**Arnd Scheel**(

*University of Minnesota*)

I'll explain how to compute (meant in this generality) using very simple circuits: AND, OR, and a random number generator --- and get the result ...
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#### Colloquium

*Finite element systems with applications*at 3:30p.m. in VinH 16

**Professor Snorre Christiansen**(

*University of Oslo*)

"Finite element systems" is a framework for analysing and constructing mixed finite element spaces. The framework gives a unified presentation of known spaces such as ...
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more
)

### Friday, 6 March 2015

#### Probability Seminar

*The 3-states AF-Potts model in high dimension.*at 2:30p.m. in VinH 311

**Ohad Feldheim**(

*IMA*)

Take a bounded odd domain of the bipartite graph $\mathbb{Z}^d$. Color the boundary of the set by $0$, then color the rest of the domain ...
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#### Combinatorics Seminar

*Two families of parametrizations for positroid varieties*at 3:35p.m. in VinH 570

**Rachel Karpman**(

*University of Michigan*)

The positroid stratification of the Grassmannian refines the Schubert stratification, and has a rich geometric and combinatorial structure. A parametrization of a positroid variety P ...
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#### Math Biology Seminar

*Complex dynamics of the tumor microenvironment conspire to promote disease and therapeutic resistance*at 3:35p.m. in VinH 209

**Paolo P. Provenzano Ph.D.**(

*Dept of Biomedical Engineering*)

Epithelial cancers, or carcinomas, behave like a complex “organ” and are comprised of multiple cell populations, including primary carcinoma cells, stromal fibroblasts, immune cells, endothelial ...
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#### MCFAM Seminar

*Modern Risk Management - Managing Risk through the Ethical Culture Business Model*at 5:30p.m. in VinH 16

**Dr. Douglas Jondle & Michelle Rovang Burke**(

*University of St. Thomas*)

The co-authors of this research will discuss it means to state that risk management is an expression of an organization’s values? This lecture will address ...
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