Education: 
B.S. in Math and Computer Science, University of Minnesota 
Ph.D. in Math, University of California at Berkeley 

Thesis Title: Integral Curves in Even Linkage Classes 
Positions: 
Associate Professor: Texas Christian University, 2005present. 
Assistant Professor: Texas Christian University, 20002005. 
Visiting Assistant Professor: University of Notre Dame, 19982000. 
Visiting Assistant Professor: University of California, Riverside, 1998 
Postdoctoral Position: Univerisity of Barcelona, 19961997. 
Consultant: Decision Research, 1996. 
This work resulted in U.S. Patent 6,324,296. 
Visiting Assistant Professor: Univeristy of California, Riverside, 1995. 
Invited Talks: 
College Station, April 2018 
Texas Algebraic Geometry Symposium 
Title: Moduli spaces of curves 
Lubbock, April 2014 
AMS special session at joint meetings 
Title: NoetherLefschetz theory and a problem of Srinivas 
New Orleans, January 2011 
AMS special session at joint meetings 
Title: Picard groups of singular surfaces 
University of Illinois at Chicago, October 2009 
Algebraic Geometry seminar 
Title: Development of the NoetherLefschetz Theorem 
University of California at Riverside, March 2009 
Algebraic Geometry seminar 
Title: Introduction to the NoetherLefschetz Theorem 
University of Notre Dame, April 2008 
Algebraic Geometry seminar 
Title: Class groups and the NoetherLefschetz theorem 
California State University at Long Beach, February 2008 
Colloquium 
Title: Introduction to the Jacobian Conjecture 
University of Texas at Arlington, November 2007 
Algebra Seminar 
Title: A Survey of Liaison Theory 
University of California at Riverside, March 2007 
Algebraic Geometry Colloquium 
Title: Introduction to the Jacobian Conjecture 
University of California at Riverside, March 2007 
Algebraic Geometry Seminar 
Title: Birationality of étale maps via surgery 
Trinity College, November 2005 
Colloquium Talk 
Title: Introduction to the Jacobian Conjecture 
Politecnico di Torino, Italy, February 2005 
Conference in commutative algebra and algebraic geometry dedicated to Paolo Valabrega for his 60th birthday 
Title: Deformations of space curves and connectedness in Hilbert schemes 
Vanderbilt University, October 2004 
AMS conference 
Title: Curves on double surfaces 
Rice University, March 2004 
Algebraic geometry seminar 
Title: Hilbert schemes of quartic curves 
Baylor University, March 2003 
Central Texas Algebra Conference 
Title: Holomorphic Injectivity and the Hopf Map 
Texas Christian University, November 2002 
AGANT seminar 
Title: Liaison theory and the classification of space curves 
University of California at Riverside, January 2002 
Algebraic geometry seminar 
Title: Hilbert schemes of degree four curves and multiplicity lines 
University of Torino, Italy, March 2001 
Colloquium talk 
Title: The jacobian conjecture 
University of California, Berkeley, August 1998 
Conference in honor of Robin Hartshorne 
Title: On the Second Section of a Rank Two Bundle 
University of Ferrara, Italy, June 1997 
Conference in honor of Mario Fiorentini 
Title: Bounds on the Rao Function 
University of California at Riverside, February 1997 
U.C.R./U.C.L.A./Utah Algebraic Geometry Conference 
Title: Connectedness in Hilbert Schemes 
Other Professional Activities: 
Coorganizer: CBMS regional meeting at TCU, June 48, 2018 
Coorganizer: Texas Geometry and Topology Conference, February 2016 
Coorganizer: Texas Geometry and Topology Conference, February 2013 
Coorganizer: Algebraic Geometry session for AMS meeting, January 2013 
Coorganizer: CBMS regional meeting at TCU, June 1823, 2012 
Coorganizer: Texas Geometry and Topology Conference, February 2010 
Coorganizer: Commutative Algebra and Algebraic Geometry conference in honor of Hartshorne's 70th birthday, Chicago, April 1113, 2008. 
Coorganizer: Texas Geometry and Topology Conference, February 2007 
Coorganizer: Texas Geometry and Topology Conference, February 2004 
Research Visitor, University of Torino, Italy, March 2001 
Coorganizer: Texas Geometry and Topology Conference, February 2001 
Coorganizer: Algebraic Geometry session for AMS meeting, April 2000 
Research Visitor, University of Torino, Italy, December 1997 
Research Visitor, U.C. Berkeley, 19951996 
Publications: 
Geometric divisors in normal local domains , (with John Brevik),
J. Pure Appl. Algebra , 222 (2018) 464476. 
GrothendieckLefschetz theorem with base locus, (with John Brevik),
Israel J. Math. , 212 (2016) 107122. 
Srinivas' problem for rational double points, (with John Brevik),
Michigan Math. J., 64 (2015), 155168. 
Developments in NoetherLefschetz theory, (with John Brevik), Contemporary Mathematics 608 (2014) 2150. 
Picard groups of normal surfaces, (with John Brevik), J. Singul. 4 (2012) 154170. 
Detachment of embedded points,
(with Dawei Chen), Algebra Number Theory 6 no. 4 (2012) 731756. 
Hilbert scheme of a pair of codimension two linear subspaces,
(with Dawei Chen and Izzet Coskun), Comm. Algebra 39 no. 8 (2011) 30213043. 
NoetherLefschetz theorem with base locus,
(with John Brevik),
Int. Math. Res. Not. IMRN 2011 no. 6, 12201244. 
Birationality of étale maps via surgery,
(with Laurence Taylor and Frederico Xavier),
J. Reine Angew. Math. 627 (2009) 8395. 
On Kulikov's Problem,
(with Frederico Xavier),
Arch. Math. (Basel) 89 no. 5 (2007) 385389. 
Deformations of space curves: Connectedness in Hilbert schemes,
Rend. Sem. Mat. Univ. Politec. Torino 64 no. 4 (2006) 433450. 
Holomorphic Injectivity and the Hopf map
(with Frederico Xavier),
Geom. Funct. Anal. 14 no. 6 (2004) 13391351 
The Hilbert Schemes of Degree Four Curves
(with Enrico Schlesinger),
Compositio Math. 139 no. 2 (2003) 169196. 
Curves on a double surface
(with Enrico Schlesinger),
Collect. Math. 54 no. 3 (2003) 327340. 
Global Inversion via the PalaisSmale Condition
(with Frederico Xavier),
Disc. Cont. Dynam. Sys.  Ser. A 8 no. 1 (2002) 1728. 
A Remark on Connectedness in Hilbert Schemes,
Comm. Algebra 28 no. 12 (Special issue in honor of Robin Hartshorne) (2000) 57455747. 
On the Second Section of a Rank Two Bundle
(with Margherita Roggero and Paolo Valabrega),
Comm. Algebra 28 no. 12 (Special issue in honor of Robin Hartshorne) (2000) 55315540. 
Bounds on the Rao Function
(with Rosa Maria MiróRoig),
J. Pure Appl. Algebra 152 no. 13 (Special issue in honor of David Buchsbaum) (2000) 253266. 
Integral Subschemes of Codimension Two,
J. Pure Appl. Algebra 141 no. 3 (1999) 269288. 
Hilbert Polynomials over Artinian Rings
(with Cristina Blancafort),
Illinois J. Math. 43 no. 2 (1999) 338349. 
Bounds on Multisecants,
Collect. Math. 49 no. 23 (Volume in memory of Fernando Serrano) (1998) 447463. 
Bounds on c_{3} for Threefolds
(with MeiChu Chang and Hoil Kim),
Manuscripta Math. 97 no. 2 (1998) 135141. 
Degrees of Generators of Ideals
(with Heath Martin and Juan Migliore),
Comm. Algebra 26 no. 4 (1998) 12091231. 
Subextremal Curves,
Manuscripta Math. 94 no. 3 (1997) 303317. 
The Hilbert Schemes of Degree Three Curves,
Ann. Sci. Ecole Norm. Sup. (4) 30 no. 3 (1997) 367384. 
Smooth Curves Linked to Thick Curves,
Compositio Math. 106 no. 2 (1997) 203210. 
Even Linkage Classes,
Trans. Amer. Math. Soc. 348 no. 3 (1996) 11371162. 
Mathematical Reviews 
Zentralblatt Reviews 