V
IGRE II:
 
Vertical Integration of Research and Education
Department of Mathematics  --  University of Georgia

VIGRE Publications

Publications Resulting from Research Funded by the VIGRE Grant

VIGRE Algebra Group

University of Georgia VIGRE Algebra Group, "First Cohomology of Finite Groups of Lie Type: Simple Modules with Small Dominant Weights", to appear in the Transactions of the AMS.

University of Georgia VIGRE Algebra Group, "Second Cohomology of Finite Groups of Lie Type”, Journal of Algebra, 360 (2012), 21-52. University of Georgia VIGRE Algebra Group, "First Cohomology of Finite Groups of Lie Type: Simple Modules with Small Dominant Weights". Submitted.

University of Georgia VIGRE Algebra Group, "An Analog of Kostant's Theorem for the Cohomology of Quantum Groups," Proceedings of the AMS, p. 85-99, 138 (2010). Published.

University of Georgia VIGRE Algebra Group, "On Kostant's Theorem for Lie Algebra Cohomology," Contemp. Math, p. 39-60, vol. 478 (2009). Published.

University of Georgia VIGRE Algebra Group, "Support Varieties for Weyl Modules Over Bad Primes," Journal of Algebra, p.602-633, vol.312 (2007). Published.

University of Georgia VIGRE Algebra Group, "Varieties of Nilpotent Matrices for Simple Lie Algebras II: Bad Primes," Journal of Algebra, p. 65-99, vol. 292 (2005). Published.

University of Georgia VIGRE Algebra Group, "Varieties of Nilpotent Matrices for Simple Lie Algebras I: Good Primes," Journal of Algebra, p. 719-737, vol. 280 (2004). Published.

VIGRE Algebraic Geometry Group

Valery Alexeev, Adrian Brunyate, “Extending Torelli Map to Toroidal Compactifications of Siegel Space,” Inventiones Mathematicae, 188 (2012), issue 1, 175-196. arXiv:1105.4384v2 [math.AG] Published.

Valery Alexeev, W. Ryan Livingson, Joseph Tenini, et al. “Extended Torelli Map to the Igusa
Blowup in Genus 6, 7, and 8”, to appear in Experimental Mathematics. arXiv:1105.4384v2 [math.AG]

VIGRE Arithmetic Geometry Group

John R. Doyle and David Krumm, "Computing numbers of bounded height." Submitted.

John R. Doyle, Xander Faber, and David Krumm, "Computation of preperiodic structures of quadratic polynomials over number fields." Preprint.

VIGRE Geometry of Numbers Group

Alexander Brown, Eleanor Dannenberg, Jennifer Fox, Joshua Hanna, Katherine Keck, Alexander Moore, Zachary Robbins, Brandon Samples and James Stankewicz, "On a Generalization of the Frobenius Number," Journal of Integer Sequences, vol. 13 (2010), Article 10.1.4.

VIGRE Geometry Group

Jason Cantarella, James Cornish, Matt Mastin, Jason Parsley, “The 27 Possible Intrinsic Symmetry Groups of 2-Component Links.” Symmetry 4, no. 1, p. 129-142 (2012), arXiv:1201.2722. Published.

Jason Cantarella, Al LaPointe, Eric Rawdon, “The Shapes of Tight Composite Knots,” arXiv:1110.3262v1.

Michael Berglund, Jason Cantarella, Meredith Perrie Casey, Ellie Dannenberg, Whitney George, Aja Johnson, Amelia Kelly, Al LaPointe, Matt Mastin, Jason Parsley, Jacob Rooney, Rachel Whitaker, “Intrinsic Symmetry Groups of Links with 8 and Fewer Crossings.” Symmetry 4, no. 1, p. 143-207 (2012), arXiv1010.3234. Published.

Jason Cantarella and Michael Piatek, "TSNNLS: A Solver for Large Sparse Least Squares Problems with Non-Negative Variables." Submitted.

Ted Ashton, Jason Cantarella, Michael Piatek, Eric Rawdon, "Knot Tightening by Constrained Gradient Descent." Preprint.

Jason Cantarella, Jason Parsley, "A New Cohomological Formula for Helicity in R^{2k+1} Reveals the Effect of a Diffeomorphism on Helicity," Journal of Geometry and Physics, p. 1127-1155, vol. 60 (2010). Published.

Jason Cantarella, Joseph Fu, Rob Kusner, John Sullivan, Nancy Wrinkle, "Criticality for the Gehring Link Problem," Geometry and Topology, p. 2055, vol. 10 (2006). Published.

Jason Cantarella, Michael Piatek, and Eric Rawdon, "Visualizing the Tightening of Knots," Proceedings of IEEE Visualization, p. 575 (2005). Published.

Ted Ashton and Jason Cantarella, "A Fast Octree-Based Algorithm for Computing Ropelength," Physical and Numerical Models in Knot Theory and Their Applications to the Life Sciences, p.323 (2005). Published.

Jason Cantarella, X.W. Faber, Chad Mullikin, "Upper Bounds for Ropelength as a Function of Crossing Number," Topology and Its Applications, p.253, vol. 135 (2003). Published.

VIGRE Computations on CM Elliptic Curves Group

Pete L. Clark, Patrick Corn, Steve Lane, Alex Rice, Jim Stankewicz, Nathan Walters, Steve Winburn, Ben Wyser, "Computing Torsion Subgroups of CM Elliptic Curves". Submitted.

Pete L. Clark, Brian Cook and Jim Stankewicz, "Torsion Points on Elliptic Curves with Complex Multiplication," in revision, International Journal of Number Theory.

VIGRE Grassmannians, Quotients, and Moduli Spaces Group

Valery Alexeev and Adrian Brunyate, "Extending Torelli Map to Toroidal Compactifications of Siegel Space," arXiv:1102.3425v2.

VIGRE Structure and Dynamics of Ecological Networks Group

L. Matamba, C. Kazanci, J.R. Schramski, M. Blessing, P. Alexander, and B.C. Patten, "Throughflow Analysis: A Stochastic Approach," in press and available online: (doi:10.1016/j.ecolmodel.2009.07.001) http://dx.doi.org/10.1016/j.ecolmodel.2009.07.001.

VIGRE Geometric Combinatorics, Arithmetic Combinatorics and Fourier Analysis Group

Mariah Hamel, Neil Lyall, Katherine Thompson, Nathan Walters, "Arithmetic Structures in Sparse Difference Sets," Journal of Number Theory, p. 1581-1589, vol. 130 (2010). Published.

VIGRE Circle Packing Group

Michael Ching and John Doyle, "Apollonian Circle Packings of the Half-Plane.” Submitted.

Other Publications

K. Chipeniuk, M. Hamel, "On Sums of Sets of Primes with Positive Relative Density," to appear in the Journal of the London Mathematical Society.

X. W. C. Faber, "On the Finite Field Kakeya Problem in Two Dimensions," Journal of Number Theory, p. 248-257, vol. 124 (2007). Published.

Other Specific Products Resulting from VIGRE Grant Funded Research

Product Type: Software (or netware)
Product Description: Jason Cantarella and Ted Ashton, octrope 1.3, A fast octree-based algorithm for computing ropelength
Sharing Information: The software can be downloaded from http://www.jasoncantarella.com/webpage/index.php?title=Octrope.

Product Type: Software (or netware)
Product Description: Jason Cantarella and Michael Piatek, tsnnls 2.2.3, A solver for large sparse least squares problems with non-negative variables.Tsnnls is used in a variety of commercial applications, including CAD (TSplines, Inc), fish-finding sonar (Atlantic Consulting), and gene sequencing (Illumina, Inc).Sharing Information: It can be downloaded from http://www.jasoncantarella.com/webpage/index.php?title=Tsnnls.

Product Type: Software (or netware)
Product Description: Jason Cantarella, plCurve 2.0.2, a library for efficiently handling space polygons.
Sharing Information: The software can be downloaded from http://www.jasoncantarella.com/webpage/index.php?title=PlCurve.

Product Type: Software (or netware)
Product Description: University of Georgia VIGRE Algebra Group, UGA3, GAP program that computes support varieties of induced modules for exceptional groups over bad primes.
Sharing Information: A description of the software can be found at http://www.math.uga.edu/~nakano/vigre/vigre.html. The software can be downloaded from http://www.math.uga.edu/~brian/UGA3.tar.gz.



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