To obtain a copy of any of the papers listed below, click on the title of the paper. The preprints should be cited by arXiv number (as they are all also available from the arXiv). You can get citation information for these papers from my Google author profile if you’re interested. The BibTeX citation information for all the papers is collected in cantarella.bib. Published papers use their MR numbers as BibTeX tags. Alternate BibTeX tags for the preprints appear below the entries for those papers.

- Knot Probabilities in Random Diagrams.

Jason Cantarella, Harrison Chapman and Matt Mastin.

*Journal of Physics A*49 (2016), p. 405001

This paper comes with a tabulation of knot diagrams up to 10 crossings (including pictures) as supplementary data (53M). - A Fast Direct Sampling Algorithm for Equilateral Closed Polygons.

Jason Cantarella, Bertrand Duplantier, Clayton Shonkwiler and Erica Uehara.

*Journal of Physics A*49 (2016), no. 27, p. 275205. - Rigid Origami Vertices: Conditions and Forcing Sets.

Zachary Abel, Jason Cantarella, Erik D. Demaine, David Eppstein, Thomas C. Hull, Jason S. Ku, Robert J. Lang, Tomohiro Tachi.

*Journal of Computational Geometry*7 (2016), no. 1, p. 171-184. - Transversality in Configuration Spaces and the Square Peg Problem.

Jason Cantarella, Elizabeth Denne and John McCleary.

arXiv:1402.6174 - The Symplectic Geometry of Closed Equilateral Random Walks in 3-space

Jason Cantarella and Clayton Shonkwiler.

*Annals of Applied Probability*26 (2016), no. 1, p. 549-596

A 30-minute talk on this paper for physicists and biologists

Slides from the talk *The tight knot spectrum in QCD.*

Roman Buniy, Jason Cantarella, Thomas Kephart and Eric Rawdon.

*Physical Review D*89 (2014), no. 5, p. 054513

PhysRevD.89.054513

This paper comes with a data set of tight knot and link vertex coordinates and summary data (including prime and composite knots and links and curvature information) and a low-resolution archive of tight knot and link vertex coordinates.- The Expected Total Curvature of Random Polygons.

Jason Cantarella, Alexander Y Grosberg, Robert B Kusner and Clayton Shonkwiler.

*American Journal of Mathematics 137*, (2015), no. 2, p. 411-438 .

arXiv:1210.6537.

2012arXiv1206.3161C - Symmetric Criticality for Tight Knots.

Jason Cantarella, Jennifer Ellis, Joseph H.G. Fu and Matt Mastin.

*Journal of Knot Theory and its Ramifications 23*(2014), 1450008-1-17

arXiv:1208.3879.

doi:10.1142/S0218216514500084 - Probability Theory of Random Polygons from the Quaternionic Viewpoint.

Jason Cantarella, Tetsuo Deguchi and Clayton Shonkwiler.

*Communications on Pure and Applied Mathematics*67 (2014), no. 10, p. 1658-1699.

CPA:CPA21480

ANSI C code for generating random polygons according to the methods of this paper is included in our plCurve library. - Ropelength Criticality.

Jason Cantarella, Joseph H.G. Fu, Rob Kusner, John Sullivan.

*Geometry and Topology*18 (2014), no. 4, p. 1973-2043.

gtropelengthcriticality - The 27 possible intrinsic symmetry groups of 2-component links.

Jason Cantarella, James Cornish, Matt Mastin and Jason Parsley.

*Symmetry*4 (2012), no. 1, p. 129-142

sym4010129 - The Shapes of Tight Composite Knots

Jason Cantarella, Al LaPointe and Eric Rawdon.

*J. Phys A: Math Theor*. 45 (2012), p. 1-19

arXiv:1110.3262

1751-8121-45-22-225202

This paper comes with several data files: tight knot and link vertex coordinates (including prime and composite knots and links and curvature information) and a low-resolution version of tight knot and link vertex coordinates. This data was generated with support from NSF grants 1115722 and 0810415 (to Rawdon). This paper was the source of the cover image of the Journal of Physics A the month it was published - Intrinsic Symmetry Groups of Links with 8 and fewer crossings

Michael Berglund, Jason Cantarella, Meredith Perrie Casey,

Ellie Dannenberg, Whitney George, Aja Johnson, Amelia Kelly,

Al LaPointe, Matt Mastin, Jason Parsley, Jacob Rooney and Rachel Whitaker.

*Symmetry*4 (2012), no. 1, p. 143-207.

arXiv:1010.3234 sym4010143 - Knot Tightening by Constrained Gradient Descent.

Ted Ashton, Jason Cantarella, Michael Piatek, and Eric Rawdon.

*Experimental Mathematics*20 (2011), no. 1, p. 57-90.

arXiv:1002.1723

acprtightening

See also Self contact sets for 50 Tightly Knotted and Linked Tubes, which is an early version of this paper. The data sets corresponding to this paper are the Atlas of Tight Knots and Links, the archive of Tight Knot and Link Vertex Coordinates and a text file summary of ropelengths for knots and links. This paper was the source of the cover image for Experimental Math when published:

- A new cohomological formula for helicity in $\R^{2k+1}$ reveals the effect of a diffeomorphism on helicity.

Jason Cantarella and Jason Parsley.

*Journal of Geometry and Physics*60 (2010), p. 1127-1155.

arxiv: math.GT/09031465

Cantarella20101127 - Criticality for the Gehring Link Problem.

Jason Cantarella, Joseph H.G. Fu, Rob Kusner, John M. Sullivan, and Nancy Wrinkle.

*Geometry and Topology*10 (2006), p. 2055-2116.

arXiv: math.DG/0402212

MR2284052 - On Comparing the Writhe of a Smooth Curve to the Writhe of an Inscribed Polygon.

Jason Cantarella.

*SIAM Journal of Numerical Analysis*42 (2005) no. 4, p. 1846-1861.

arXiv: math.DG/0202236

MR2139226 - Visualizing the tightening of knots

Jason Cantarella, Michael Piatek, and Eric Rawdon.

*Proceedings of IEEE Visualization 2005*, p. 575-582.

cprvis - A fast octree-based algorithm for computing ropelength

Ted Ashton and Jason Cantarella

In*Physical and Numerical Models in Knot Theory*

*and their Application to the Life Sciences*,

World Scientific Press (2005), p. 323-341

arxiv

MR2197947

This is the algorithm implemented by the Octrope library. - TSNNLS: A solver for large sparse least squares problems with non-negative variables

Jason Cantarella and Michael Piatek.

Unpublished (2004).

arxiv:cs.MS/0408029

tsnnls

This unpublished manuscript describes the algorithm implemented in our open-source TSNNLS library. The library is used around the world for solving sparse constrained least squares problems of moderate size (matrices dimensions of a few thousand by a few thousand). TSNNLS was very fast for its day, but it is not an actively updated package and it is probably somewhat behind the times at this point. If you want to do more general or much larger problems of this type, I’d look at the COIN-OR project (specifically IpOPT). - An Energy-Driven Approach to Linkage Unfolding.

Jason Cantarella, Erik Demaine, Hayley Iben and James O’Brien.

*SCG ’04: Proceedings of the twentieth annual symposium on Computational geometry*, p. 134-143

Abstract (not posted) in*Proceedings of the 12th Annual DIMACS Fall Workshop*

*on Computational Geometry*, Piscataway, New Jersey, November 14-15, 2002.

James O’Brien and Hayley Iben prepared some cool movies and wrote a nice Java applet to demonstrate some of the results from this paper. - Upper Bounds for Ropelength as a function of Crossing Number.

Jason Cantarella, X.W. Faber, and Chad A. Mullikin.

*Topology and its Applications*135 (2003), no. 1-3, p. 253-264.

arXiv: math.GT/0210245

Cantarella2004253 - The Second Hull of a Knotted Curve.

Jason Cantarella, Greg Kuperberg, Robert B. Kusner, and John M. Sullivan.

*American Journal of Mathematics*125 (2003) no. 6, p. 1335-1348.

arXiv: math.GT/0204106

MR2018663 - Vector Calculus and the Topology of Domains in 3-Space.

Jason Cantarella, Dennis DeTurck, and Herman Gluck.

*American Mathematical Monthly*109 (2002) no. 5. p. 409-442

MR2003c:53023 - On the Minimum Ropelength of Knots and Links.

Jason Cantarella, Robert B. Kusner, and John M. Sullivan.

*Inventiones Mathematicae*150 (2002) no. 2, p. 257-286.

MR2003h:58014 - Circles Minimize Most Knot Energies.

Aaron Abrams, Jason Cantarella, Joe Fu, Mohammad Ghomi, and Ralph Howard.

*Topology*42 (2002) no. 2, p. 381-394.

MR2004f:58014

This paper was one of the 5 most downloaded articles in the journal*Topology*during January-August of 2004. - The Biot-Savart operator for application to knot theory, fluid dynamics, and plasma physics

Jason Cantarella, Dennis DeTurck, and Herman Gluck.

*Journal of Mathematical Physics*42 (2001), no. 2, p. 876-905.

MR2002e:78002 - Isoperimetric problems for the helicity of vector fields and the Biot-Savart and curl operators

Jason Cantarella, Dennis DeTurck, Herman Gluck, and Mikhail Teytel.

*Journal of Mathematical Physics*41 (2000), no. 8, p. 5615-5641.

MR2001f:78010 - A General Cross-Helicity Formula

Jason Cantarella.

*Proceedings of the Royal Society, Series A*456 (2000) no. 2003, p. 2771-2779

MR2002f:53002 - Upper Bounds for the Writhing of Knots and the Helicity of Vector Fields

Jason Cantarella, Dennis DeTurck, and Herman Gluck.

*Proceedings of the Conference in Honor of the 70th Birthday of Joan Birman*

Jane Gilman, Xiao-Song Lin, William Menasco (eds)

International Press, AMS/IP Series on Advanced Mathematics (2000)

MR2003j:58018 - Eigenvalues and Eigenfields of the Biot-Savart and Curl Operators on Spherically Symmetric Domains

Jason Cantarella, Dennis DeTurck, Herman Gluck, and Misha Teytel.

*Physics of Plasmas*7(7), 2000. pp.2766-2775.

MR2001b:76094 - Influence of Geometry and Topology on Helicity

Jason Cantarella, Dennis DeTurck, Herman Gluck, and Misha Teytel.

In*Magnetic Helicity in Space and Laboratory Plasmas*,

Michael Brown, Richard Canfield and Alexei Pevtsov (eds),

*Geophysical Monographs*111, American Geophysical Union. (1999)

influence - Topological Structure of Stable Plasma Flows

Jason Cantarella.

Ph.D. Thesis, University of Pennsylvania, 1999.

cantarellathesis - Tight Knot Values Deviate From Linear Relation

Jason Cantarella, Robert B. Kusner, and John M. Sullivan.

*Nature*392, March 19, 1998, p. 237.

cksnature - Nontrivial Embeddings of Polygonal Intervals and Unknots in 3-Space

Jason Cantarella and Heather Johnston.

*Journal of Knot Theory and its Ramifications*, Vol. 7, No. 8 (1998) p. 1027-1039.

MR99m:57002 - The Principal Eigenvalue of the Curl Operator on the Flat Torus

Jason Cantarella, Dennis DeTurck, and Herman Gluck.

*Unpublished preprint*circa 1996