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6 papers · 1 filter
Elliptic Calabi-Yau threefolds over a del Pezzo surface
Simon Rose, Noriko Yui
We consider certain elliptic threefolds over the projective plane (more generally over certain rational surfaces) with a section in Weierstrass normal form. In particular, over a d…
Mathematical models for geometric control theory
Saber Jafarpour, Andrew D. Lewis
Just as an explicit parameterisation of system dynamics by state, i.e., a choice of coordinates, can impede the identification of general structure, so it is too with an explicit p…
Four lectures on secant varieties
E. Carlini, N. Grieve, L. Oeding
This paper is based on the first author's lectures at the 2012 University of Regina Workshop "Connections Between Algebra and Geometry". Its aim is to provide an introduction to th…
The approximation to a fixed point
Sibylla Priess-Crampe, Paulo Ribenboim
In a spherically complete ultrametric space, a strictly contracting mapping has a fixed point. We indicate in this paper how this fixed point can either be reached or approximated.
An Overview of the Dwarf Galaxy Survey
S. C. Madden, A. Remy Ruyer, M. Galametz +38
The Dwarf Galaxy Survey (DGS) program is studying low-metallicity galaxies using 230h of far-infrared (FIR) and submillimetre (submm) photometric and spectroscopic observations of…
A short note on sign changes
Jaban Meher, Karam Deo Shankhadhar, G. K. Viswanadham
In this paper, we present a quantitative result for the number of sign changes for the sequences of the Fourier coefficients of normalized Hecke eige…