- Greek (and Arabic) sources of the
*Geometria Practica*of Christopher Clavius, S.J. (1604), Clavius Group meeting, June 29, 2018 - A Mathematician Reads Plutarch, talk given at Joyce Contemplative Center, Worcester Area Mathematics Winter Session, January 25, 2018.
- Evaluation Codes from Algebraic Surfaces, SIAM Conference on Applied Algebraic Geometry, Atlanta, August 2, 2017.
- Returning to the Roots of Mathematics Faculty Scholarship Lunch talk, February 14, 2017.
- Two historical talks on issues in mathematical historiography and the
*Conics*of Apollonius, given June 21 and 22, 2016 in Clavius Group seminar at Holy Cross. - Codes from surfaces with small Picard number, Fq12, Saratoga Springs, NY, July 17, 2015.
- Codes from cubic surfaces, HC Faculty Seminar, November 12, 2014 (and a somewhat later version at University of Illinois Algebraic Geometry Seminar, March 5, 2015)
- A historical talk on different interpretations of Book II of Euclid's
*Elements*, HC Math Summer research seminar, June 25, 2014. - A historical talk on Archimedes'
*Quadrature of the Parabola*, HC Math/CS Summer Research Seminar, June 12, 2013. - Continua of central configurations
in the
*n*-body problem, AMS Special Session on Celestial Mechanics, JMM, San Diego, January 9, 2013. - A historical talk on Babylonian roots of the Pythagorean theorem, Amherst College Mathematics Colloquium, September 29, 2011.
- Observations on Toric Surface Codes -- HC Faculty Seminar, September 8 and 15, 2011.
- A talk on mathematics courses in Holy Cross's
*Montserrat*program of first year seminars, MAA MathFest, Lexington, KY, August 4, 2011. - Error Control Codes from Algebra -- SACNAS National Meeting, Dallas TX, October 16, 2009.
- Order domains, Algebra Seminar, University of South Alabama, April 6, 2007.
- Gr"obner bases and polynomial equations Mathematics Department Colloquium, University of South Alabama, April 5, 2007.
- Mathematics and Music -- MAA NES meeting Sacred Heart University, November 18, 2006.
- Workshop on coding theory at TAGS, May 17 - 19, 2006
- Slides for a talk on Gr"obner bases for encoding of AG Goppa codes and codes from order domains (Gr"obner Bases Semester, D1 Workshop, Johann Kepler Universitaet, Linz), May 1, 2006
- Slides for talk in AMS Special Session on Coding and Design-Theoretic Applications of Polynomials, January 7, 2004.

- (with Hal Schenck) Codes from surfaces with small Picard number,
SIAM J. on Appl. Algebra Geometry
**2**, no. 2 (2018), 242-258. - Erratum to ``Toric Codes and Finite Geometries,'' Finite Fields and Their
Applications,
**48**(2017), 447-8. - A Mathematician Reads Plutarch: Plato's
Criticism of the Mathematicians of His Time, Journal of Humanistic Mathematics,
**Volume 7 Issue 2**(July 2017), 269-293. - Toric Codes and Finite Geometries, Finite Fields and Their Applications
**45**(2017), 203-216. - (with Jonathan Gomez, Alex Gutierrez, Roberto Pelayo, and Jesse Robert) Cocircular
Relative Equilibria of Four Vortices,
*Involve***9**, no. 3 (2016), 395-410. - (with David Cox and Don O'Shea)
**Ideals, Varieties, and Algorithms, 4th ed.**, Springer, New York, 2015. - Remarks on generalized toric codes, Finite Fields and Their Applications
**24**(2013), 1-14. - (with Julian Hachmeister, Jasmine McGhee, Roberto Pelayo, and Spencer Sasarita)
Continua of central configurations with a negative mass in the
*n*-body problem, Celest. Mech. Dyn. Astr.**115**(2013), 427-438, DOI 10.1007/s10569-013-9471-1. - (with David Damiano),
**A Course In Linear Algebra**, corrected reprint, Dover, 2011. - (with David Cox and Hal Schenck)
**Toric Varieties**, AMS Graduate Studies in Mathematics 124, 2011. - Algebraic geometry codes from higher-dimensional varieties,
in
*Advances in Algebraic Geometry Codes*, E. Martinez-Moro, Carlos Munera, and D. Ruano, eds. World Scientific, 2009. - Automorphisms and Encoding of AG
and Order Domain Codes, in: Gr"obner Bases, Coding Theory, and Cryptography, M. Sala,
T. Mora, L. Perret, S. Sakata, C. Traverso, eds. Springer RISC series, 2009.
- A key equation
and the computation of error values for codes from order domains
(a shorter version of this paper appears in ADVANCES IN CODING THEORY AND CRYPTOGRAPHY,
edited by T Shaska, W C Huffman, D Joyner, and V Ustimenko, World Scientific, 2007.)
- The Ubiquity
of Order Domains for the Construction of Error Control Codes,
*Advances in Mathematics of Communications***1**(2007), 151-171; -
Erratum for: The Ubiquity of Order Domains for the Construction of Error
Control Codes,
*Advances in Mathematics of Communications***2**(2008), 344-345. - (with D. Cox and D. O'Shea),
**Ideals, Varieties, and Algorithms:**A*n Introduction to Computational Algebraic Geometry and Commutative Algebra,*3nd edition, New York: Springer-Verlag, 2007. Follow this link for the Ideals, Varieties, and Algorithms homepage. - (with Hal Schenck) Toric
surface codes and Minkowski sums,
*SIAM Journal of Discrete Mathematics***20**(2006), 999-1014. - (with Ryan Schwarz) Toric codes
and Vandermonde determinants (new title)
*Applicable Algebra in Engineering, Communications, and Computing***18**(2007), 349-367. - (A Holy Cross Project with Cristina Ballantine, Sharon Frechette)
Determinants
Associated to Zeta Matrices of Posets,
*Linear Algebra and its Applications***411**(2005), 364-370. - (with D. Cox and D. O'Shea),
**Using Algebraic Geometry, 2nd ed.**, Graduate Texts in Mathematics, v. 185. New York: Springer-Verlag, 2005. This version contains several new sections on Gr"obner fans of ideals, the Gr"obner Walk basis conversion algorithm, and a new chapter on codes from order domains and the Berlekamp-Massey-Sakata decoding algorithm. - (with Leah Gold and Hal Schenck)
Cayley-Bacharach and Evaluation Codes
on Complete Intersections,
*Journal of Pure and Applied Algebra*,**196**(2005), 91-99. - (with G. Boros, V. Moll, E. Mosteig, R. Stanley)
A map on the space of rational functions,
*Rocky Mountain Mathematical Journal***35**(2005), 1861-1880. - On the Zeroes of Two Families of Polynomials Arising From
Certain Rational Integrals,
*Rocky Mountain Mathematical Journal***35**(2005), 1205 - 1216. This note gives a proof of a conjecture of Boros, Moll and Shallit on the locations of roots of two families of univariate polynomials arising in the evaluation of certain rational integrals. This problem was suggested to me by Victor Moll in June 2002 at SIMU at the University of Puerto Rico in Humacao. See Victor's article in the March 2002 issue of the*Notices of the AMS*for more on the background of this story. - "Solving the Selesnick-Burrus
Filter Design Equations Using Computational Algebra and Algebraic
Geometry",
*Advances in Applied Mathematics***31**(2003), 463-500. - (with D. Ortiz, R. Ortiz-Rosado, R. Pablo, and K. Rios-Soto)
Some Remarks on Fitzpatrick and Flynn's Gr"obner Basis
Technique for Pade' Approximation,
*Journal of Symbolic Computation***35**(2003), 451-461.

Last modified: *June 29, 2018*