Introduction to Archimedean Horizontal Stars on Geometric Tube Design

Geometric Reductivity at Archimedean Places

Let G → GL(n,C) be a representation of a complex reductive group. A theorem of Hilbert says that the algebra C[x1, . . . , xn] of invariant polynomials is finitely generated. Let Y be the projective variety defined by this graded algebra, and then we have a rational morphism π : C · · · → Y(C). A theorem on geometric reductivity of Mumford says that a point x ∈ C is regular for the map π if and...

Horizontal Branch stars as AmFm / HgMn stars

Recent observations and models for horizontal branch stars are briefly described and compared to models for AmFm stars. The limitations of those models are emphasized by a comparison to observations and models for HgMn stars.

Geometric Computing: Introduction to CGAL

Here is a preliminary list of possible project topics. For some of them there one or more relevant chapters in [12]. If you decide on a project and can’t get the related papers on the web (due to access priveledges), please let me know and I will send you the papers. The references given here are indicative, you can find more (and perhaps better ones) if you search around. (More information on ...

Introduction to Geometric Stability Theory

I will use David Marker’s book [Mar] as the basic reference for the talks, partly because it’s likely to be the easiest one to find. Other presentations are available: the books by Hodges [Hod], Poizat [PoE] are also excellent (and Poizat in French [PoF] is even better). The classic text on model theory is by Chang and Keisler [ChK]. To go deeper into geometric stability theory you should look ...

Introduction to Pauli Geometric Algebra