My website will soon move here!!
Anne J. Shiu
I am a Professor in the Department of Mathematics
at Texas A&M University.
I received a Ph.D. in 2010 in Mathematics with designated emphasis in genomic and computational biology from the University of California Berkeley. My advisors were Bernd Sturmfels and Lior Pachter.
During 2010-2011, I was an NSF Postdoctoral Fellow in the Department of Mathematics
at Duke University. During 2011-2014, I was an NSF Postdoc and L.E. Dickson Instructor in the Department of Mathematics at the University of Chicago.
- Email address: annejls at math dot tamu dot edu
- Office: Blocker 601 E
- My CV
Directed Reading Program
Jordy Lopez Garcia and Angelique Morvant,
I am organizing a
Directed Reading Program. Here is the poster.
Research Experience for Undergraduates:
The Department of Mathematics at Texas A&M will host an eight-week Research Experience for Undergraduates (REU) in 2023.
I will mentor the program on Algebraic Methods in Computational Biology.
See details here.
Results and photos from our
2015 REU and
2020 REU, in which I mentored
the program on Algebraic Methods in Computational Biology.
Results (presentation videos and slides) from the 2022 MSRI-UP REU, in which I was the research director,
Algebraic, geometric, and combinatorial approaches to mathematical biology; biochemical dynamical systems; neural coding; parameter identifiability; algebraic statistics; genomics.
Link to my papers on the ArXiv.
Deficiency of chemical reaction networks: The effect of operations that preserve multistationarity and periodic orbits,
Awildo Gutierrez, Elijah Leake, Caelyn Rivas-Sobie, and Jordy Lopez Garcia. Submitted.
On the connectedness of multistationarity regions of small reaction networks,
Allison Dennis. Submitted.
Prevalence of multistationarity and absolute concentration robustness in reaction networks,
Badal Joshi, Nidhi Kaihnsa, and Tung D. Nguyen. In revision.
Wheels: A new criterion for non-convexity of neural codes,
Laura Matusevich and Alexander Ruys de Perez. Accepted to Advances in Applied Mathematics.
Identifiability of linear compartmental tree models and a general formula for input-output equations
Cashous Bortner, Elizabeth Gross, Nicolette Meshkat, and Seth Sullivant.
Accepted to Advances in Applied Mathematics.
Absolute concentration robustness in networks with low-dimensional stoichiometric subspace,
with Nicolette Meshkat and Angélica Torres.
Vietnam J. Math., special issue in honor of Bernd Sturmfels, 50, 623-651 (2022).
Identifiability of linear compartmental models: The impact of removing leaks and edges,
with Patrick Chan, Katherine Johnston, Aleksandra Sobieska, and Clare Spinner. Submitted.
Nondegenerate neural codes and obstructions to closed-convexity, with Patrick Chan, Katherine Johnston, Joseph Lent, and Alexander Ruys de Perez. Accepted to SIAM J on Discrete Math.
Neural Codes With Three Maximal Codewords: Convexity and Minimal Embedding
Dimension, with Katherine Johnston and Clare Spinner. Involve, a Journal of Mathematics, 15:2, pp. 333–343 (2022).
Mixed volume of small reaction networks, with
Nida Obatake and Dilruba Sofia. Involve, a Journal of Mathematics,
13:5, pp. 845-860 (2020).
Non-monotonicity of closed convexity in neural codes, with Brianna Gambacini, R. Amzi Jeffs, and Sam Macdonald.
Vietnam J. Math., special issue in honor of Bernd Sturmfels,
50, 359–373 (2022).
Dynamics of ERK regulation in the processive limit, with Carsten Conradi, Nida Obatake, and Xiaoxian Tang. Journal of Mathematical Biology, vol. 82, article 32 (2021).
Identifiability of linear compartmental models: The effect of moving inputs, outputs, and leaks, with Seth Gerberding and Nida Obatake. Linear and Multilinear Algebra, vol. 70, no. 14, pp. 2782-2803 (2022).
Neural codes and the factor complex,
with Alexander Ruys de Perez and Laura Matusevich. Advances in Applied Mathematics, vol. 114, Article 101977 (2020).
Oscillations and bistability in a model of ERK regulation, with Nida Obatake, Xiaoxian Tang, and Angelica Torres. Journal of Mathematical Biology, vol. 79, no. 4, 1515-1549 (2019).
Joining and decomposing reaction networks, with Elizabeth Gross, Heather Harrington, and Nicolette Meshkat. Journal of Mathematical Biology, vol. 80, pp. 1683-1731 (2020).
Multistationarity in structured reaction networks, with Alicia Dickenstein, Mercedes Perez Millan, and Xiaoxian Tang. Bulletin
of Mathematical Biology, vol. 81, no. 5, 1527-1581 (2019).
Emergence of oscillations in a mixed-mechanism phosphorylation system, with Carsten Conradi and Maya Mincheva. Bulletin
of Mathematical Biology, vol. 81, no. 6, 1829-1852 (2019). Supplementary Information.
Revisiting an intracellular regulatory network that exhibits oscillations, with Jonathan Tyler and Jay Walton. Journal of Mathematical Biology, vol. 78, no. 7, 2341-2368 (2019).
Linear compartmental models: input-output equations and operations that preserve identifiability, with Elizabeth Gross, Heather A. Harrington, and Nicolette Meshkat. SIAM Journal on Applied Mathematics, vol. 79, no. 4, 1423–1447 (2019).
Algebraic signatures of convex and non-convex codes, with
Carina Curto, Elizabeth Gross,
Jack Jeffries, Katherine Morrison, Zvi Rosen, and Nora Youngs.
Journal of Pure and Applied Algebra, vol. 223, no. 9, 3919-3940 (2019).
Neural codes, decidability, and a new local obstruction to convexity,
with Aaron Chen and Florian Frick. SIAM Journal on Applied Algebra and Geometry, vol. 3, no. 1, 44−66 (2019).
Nondegenerate multistationarity in small reaction networks, with Timo de Wolff. Discrete & Continuous Dynamical Systems - B, vol. 24, no. 6, 2683-2700 (2019).
Identifiability of linear compartment models: the singular locus, with Elizabeth Gross and Nicolette Meshkat. Advances in Applied Mathematics, vol. 133, 102268 (2022).
Dynamics of post-translational modification systems: recent progress and future directions, with Carsten Conradi. Invited Perspective. Biophysical Journal, vol. 114, issue 3, pp. 507-515 (2018).
Gröbner bases of neural ideals, with Rebecca Garcia, Luis Garcia Puente, Ryan Kruse, Jessica Liu, Dane Miyata, Ethan Petersen, and Kaitlyn Phillipson. International Journal of Algebra and Computation, vol. 28, no. 4, pp. 553-571 (2018).
An all-encompassing global convergence result for processive multisite phosphorylation systems, with Mitchell Eithun. Mathematical Biosciences, vol. 291, pp. 1-9 (2017).
Which small reaction networks are multistationary?, with Badal Joshi. SIAM Journal on Applied Dynamical Systems, vol. 16, pp. 802-833 (2017).
Obstructions to convexity in neural codes, with Caitlin Lienkaemper and Zev Woodstock. Advances in Applied Mathematics, vol. 85, pp. 31-59 (2017).
What makes a neural code convex?, with Carina Curto, Elizabeth Gross,
Jack Jeffries, Katherine Morrison, Mohamed Omar, Zvi Rosen, and Nora Youngs. SIAM Journal on Applied Algebra and Geometry, 1:1, pp. 222-238 (2017).
Analyzing multistationarity in chemical reaction networks using the determinant optimization method, with Bryan Félix and Zev Woodstock. Applied Mathematics and Computation. Volumes 287–288, pp. 60-73 (2016).
- Sign conditions for injectivity of generalized polynomial maps with applications to chemical reaction networks and real algebraic geometry, with Stefan Muller, Elisenda Feliu, Georg Regensburger, Carsten Conradi, and Alicia Dickenstein. Foundations of Computational Mathematics, 16:1, pp. 69-97 (2016).
- A survey of methods for deciding whether a reaction network is multistationary, with Badal Joshi. Mathematical Modelling of Natural Phenomena, special issue on "Chemical dynamics", 10:5, pp. 47-67 (2015).
- A global convergence result for processive multisite phosphorylation systems, with Carsten Conradi. Bulletin of Mathematical Biology 77:1, pp. 126-155 (2015).
- A geometric approach to the global attractor conjecture, with Manoj Gopalkrishnan and Ezra Miller. SIAM J. Appl. Dyn. Syst., 13:2, pp. 758-797 (2014).
- A projection argument for differential inclusions, with applications to persistence of mass-action kinetics, with Manoj Gopalkrishnan and Ezra Miller. SIGMA 9 (2013), 025, 25 pages.
- Atoms of multistationarity in chemical reaction networks, with Badal Joshi. Journal of Mathematical Chemistry, 51:1, pp. 153-178 (2013).
- Simplifying the Jacobian Criterion for precluding multistationarity in chemical reaction networks, with Badal Joshi. SIAM J. Appl. Math., 72:3, pp. 857-876 (2012).
- Chemical reaction systems with
toric steady states, with Mercedes Perez Millan,
Alicia Dickenstein, and Carsten Conradi. Bulletin
of Mathematical Biology, 74:5, pp. 1027-1065 (2011).
- Algebraic methods for biochemical reaction network theory, Ph.D. thesis, 2010.
- Siphons in chemical reaction networks, with Bernd Sturmfels. Bulletin of Mathematical Biology, 72:6, pp. 1448-1463 (2010).
- The dynamics of weakly reversible population processes near facets, with David F. Anderson. SIAM J. Appl. Math. 70:6, pp. 1840-1858 (2010).
- The smallest multistationary chemical reaction network. Proceedings of the Third International Conference, Algebraic Biology 2008, Castle of Hagenberg, Austria, July 31-August 2, 2008. Lect. Notes Comput. Sc. 5147, pp. 172-184 (2008).
- Toric dynamical systems, with Gheorghe Craciun, Alicia Dickenstein, and Bernd Sturmfels. Journal of Symbolic Computation 44, pp. 1551-1565 (2009).
- Comparing pattern detection methods in microarray time series of the segmentation clock, with M. Dequeant, S. Ahnert, H. Edelsbrunner, T. Fink, E. Glynn, G. Hattem, A. Kudlicki, Y.
Mileyko, J. Morton, A. Mushegian, L. Pachter, M. Rowicka, B. Sturmfels, and O. Pourquie. PLoS ONE 3:8, e2856 (2008).
- The cyclohedron test for finding periodic genes in time course expression studies, with Jason Morton, Lior Pachter, Bernd Sturmfels.
Statistical Applications in Genetics and Molecular Biology: Vol. 6 : Iss. 1, Article 21 (2007).
- Convex rank tests and semigraphoids, with Jason Morton, Lior Pachter, Bernd Sturmfels, Oliver Wienand. SIAM J. Discrete Math. 23:3, pp. 1117-1134 (2009).
- Three counterexamples on semigraphoids, with Raymond Hemmecke, Jason Morton, Bernd Sturmfels, Oliver Wienand. Combinatorics, Probability and Computing. 17:02, pp 239-257 (2008).
- Geometry of rank tests, with Jason Morton, Lior Pachter, Bernd Sturmfels, Oliver Wienand. The third European Workshop on Probabilistic Graphical Models, Prague, Czech Republic,
Sept. 12-15, 2006.
Papers by undergraduate students under my mentorship:
On the identification of k-inductively pierced codes using toric ideals
, Molly Hoch, Samuel Muthiah, and Nida Obatake. Submitted (in revision).
Strengthening relationships between neural ideals and receptive fields, Angelique Morvant. Rose-Hulman Undergraduate Mathematics Journal, 20:1 (2019), Article 8.
Conditions for Solvability in Chemical Reaction Networks at Quasi-Steady-State, Mark Sweeney. Submitted.
Precluding Oscillations in Michaelis-Menten Approximations of
Dual-site Phosphorylation Systems,
Hwai-Ray Tung. Mathematical Biosciences. 306, pp 56-59 (2018).
Every Binary Code Can Be Realized by Convex Sets,
Megan K. Franke and Samuel Muthiah. Advances in Applied Mathematics. 99, pp 83-93 (2018).
No oscillations in the Michaelis-Menten approximation of the dual
futile cycle under a sequential and distributive mechanism,
Adriana Morales and Luna Bozeman. SIAM Undergraduate Research Online. 10, pp 21-28 (2017).
Complex-Balanced Steady States of Chemical Reaction Networks that Contain an Eulerian Cycle,
Daniel Thielman (co-mentored by Christine Berkesch). Undergraduate thesis (Duke), Apr. 2012.
More about me:
My research group:
Photo (April 2019)
Graduated Ph.D. students:
Nida Obatake (Ph.D. 2021), Postdoc, Dept. of Mathematics, UC San Diego, followed by position in industry.
Thesis title: On the Stability and Number of Steady States of Chemical Reaction Networks
Alex Ruys de Perez (Ph.D. 2021, co-advised with Laura Matusevich), Postdoc, Dept. of Mathematics and Southeast Center for Mathematics and Biology, GA Tech
Thesis title: New Tools for Classifying Convex Neural Codes: The Factor Complex and the Wheel
Jonathan Tyler (Ph.D. 2019, co-advised with Jay Walton), Postdoc, Dept. of Mathematics, University of Michigan
Thesis title: Mathematical Modeling of Biological Clocks
Xiaoxian Tang (2017-2019), Faculty, Dept. of Mathematics, Beihang University (China)
Upcoming Workshops and Conferences:
Texas Women in Mathematics Symposium, Texas A&M (February 1-2, 2020)
A room of one's own (April 24-26, 2020) - Postponed to a later date!
Seminar on the Mathematics of Reaction Networks (twice a month).
SMB Annual Meeting, online (Jun. 13-17, 2021).
SIAM Conference on Applied Algebraic Geometry (AG21), Texas
A&M University - ONLINE - (Aug. 16-20, 2021).
AIM SQUARE (March 21-25, 2022).
(Virtual) JMM (April 6-9, 2022).
Discrete Math Day (Northeast Combinatorics Network), Colgate University (April 23, 2022).
Texas Algebraic Geoemtry Symposium, Texas A&M (Sept. 30 - Oct. 2, 2022).
SACNAS National Diversity in STEM conference, San Juan, Puerto Rico (October 27-29, 2022).
Joint Mathematics Meetings, Boston (Jan. 4-7, 2023).
Texas Women in Mathematics Symposium, University of Texas (Mar. 4-5, 2023)
AIM SQUARE (March 20-24, 2023).
SIAM Conference on Applied Algebraic Geometry (AG23), Eindhoven University of Technology (Eindhoven, the Netherlands) (Jul. 10-14, 2023).
AIM SQUARE (Aug. 5-9, 2024).
Past Workshops and Conferences:
Events I am organizing:
Past events organized:
- With Sourav Chatterji, I organized a Berkeley-Davis Mathematical Genomics Meeting
(Friday, September 15, 2006 at the
UC Davis Genome Center).
- With Gheorghe Craciun and Manoj Gopalkrishnan, I organized a
Special Session on the Mathematics of Biochemical Reaction Networks, which took place at the 2009 AMS Spring Southeastern Section Meeting in
Raleigh, NC, April 4-5, 2009 (Saturday - Sunday).
- With Raman Sanyal, I organized the Berkeley Discrete Math Seminar during Spring 2009.
- With Valerie Hower, I organized a mini-symposium at the SIAM Math for Industry conference (October 9-11, 2009 in San Francisco). The mini-symposium took place 2:15 p.m.-4:15 p.m. on Saturday, October 10.
- With Trevor Potter, Betsy Stovall, and Cynthia Vinzant, I organized a monthly seminar at UC Berkeley entitled Career Talks. This series introduced math graduate students to career paths within academia and industry.
With Sonja Mapes, I organized the Duke Algebraic Geometry seminar (Spring 2011).
With Manoj Gopalkrishnan and Casian Pantea, I organized a
minisymposium on biochemical reaction networks at
the SIAM Conference on Applied Algebraic Geometry, NC State, Raleigh NC (Thurs.-Sun., Oct. 6-9, 2011).
- With Francois Boulier, Thomas Sturm, and Andreas Weber,
I organized a Symbolic Methods for Chemical Reaction Networks seminar at
Castle Dagstuhl in Germany (November 12-16, 2012). The Dagstuhl report of this seminar is available here.
- With Alicia Dickenstein and Jeremy Gunawardena, I organized a workshop on Mathematical problems arising from biochemical reaction networks at AIM in Palo Alto CA (March 25-29, 2013). Computer algebra tutorial file available here.
- With Gilles Gnacadja, I organized a minisymposium on Algebraic Aspects of Biochemical Reaction Networks at the SIAM Conference on Applied Algebraic Geometry 2013 at Colorado State University (August 1-4, 2013).
- I was one of the organizers of the 2015 Texas Algebraic Geometry Symposium, Texas A&M University (April 10-12, 2015). Photo.
With Alicia Dickenstein, I organized a minisymposium on Algebraic structures arising in systems biology at the SIAM Conference on Applied Algebraic Geometry (AG15), Daejeon, South Korea, (August 3-7, 2015).
- I was one of the organizers of the Mini-TAGS workshop at Texas A&M (Saturdays, September 26, 2015 and October 24, 2015)
With Paulo Lima-Filho and Jay Walton, I organized an IAMCS workshop on Contemporary Mathematical Challenges in the Life Sciences (May 16-18, 2016).
- With David F. Anderson, Matthew Johnston, Casian Pantea, and Lea Popovic, I organized a
workshop on "Mathematical Analysis of Biological Interaction Networks" at Banff International Research Station (Jun. 5 to Jun. 9, 2017). Photo.
- With Carsten Conradi and Gheorghe Craciun, I organized
a minisymposium on
Algebraic Methods for Analyzing Biological Interaction Networks
at the SIAM Conference on Applied Algebraic Geometry 2017 at Georgia Tech (Aug. 2-3, 2017).
- I was one of the organizers of the 2018
Texas Algebraic Geometry Symposium, Texas A&M University (Apr. 6-8, 2018). Conference poster courtesy of David Kerr.
With Brandy Stigler, I organized a special session on New Developments in Algebraic Biology at the
AWM Research Symposium 2019 at Rice University (April 6-7, 2019).
"Identifiability of linear compartment models", Industrial and Applied Mathematics Seminar, Texas A&M (Feb. 15, 2021).
"Finding Periodic Genes: From Mice to Mathematics", Biostatistics seminar, UC Davis (online), (May 24, 2021).
"Absolute concentration robustness in networks with many conservation laws",
minisymposium on "Advances in deterministic models of biochemical interaction networks"
SMB Annual Meeting, online (Jun. 15, 2021 at 11:30 am Central).
"Identifiability and Operations on Linear Compartmental Models",
minisymposium on "Algebra and Geometry of Dynamic Models"
SIAM Conference on Applied Algebraic Geometry 2021, Texas A&M (Aug. 18, 2021 at 1:40 PM Central)
"Absolute concentration robustness and multistationarity",
Mathematics of Reaction Networks (online) seminar (Sept. 16, 2021 at 10:00 AM Central)
"Identifiability of linear compartmental models", Applied CATS (Combinatorics, Algebra, Topology & Statistics) seminar, KTH Royal Institute of Technology (by Zoom, Nov. 30, 2021 at 16:15 CEST)
"MSRI--UP 2022: Algebraic Methods in Mathematical Biology", MSRI Special Session on the MSRI Undergraduate Program, JMM (held online, Apr. 9, 2022 at 11:00 AM Pacific)
"Which neural codes are convex?", plenary talk, Discrete Math Day (Northeast Combinatorics Network), Colgate University (April 23, 2022).
"Oscillations and bistability in multisite phosphorylation systems",
AMS Special Session on Complex Systems in the Life Sciences, JMM (January 7, 2023 at 3:00 pm)
TBA, plenary talk, Texas Women in Mathematics Symposium, University of Texas (Mar. 5, 2023 at Noon)
TBA, plenary talk,
SIAM Conference on Applied Algebraic Geometry (AG23), Eindhoven University of Technology (Eindhoven, the Netherlands) (Jul. 10-14, 2023).
- Association of Former Students Distinguished Achievement College-Level Award in Teaching, 2019. Press release and photo.
Invited speaker for the 2018-19 Ethel Ashworth-Tsutsui Memorial Lecture. Press release.
- NSF Postdoctoral Fellowship, 2010-2013 (DMS-1004380)
- NSF grant: "Biochemical reaction systems: multistationarity, persistence, and identifiability", 2013-2017 (DMS-1312473, transferred to DMS-1513364)
- Simons Foundation Collaboration Grant for Mathematicians, 2017-2018 (#521874)