# Matt Kerr

Cupples I, Room 114

office #: (314)-935-6746

e-mail: matkerr [at] math.wustl.edu

**Recent and Upcoming Conferences:**

I-70 Algebraic Geometry
Symposium, November 2-3, 2019, St. Louis

(co-organized with R. Beheshti and M. Kumar)

PIMS Symposium on Hodge Theory, Arithmetic, and Moduli,
May 13-17, 2019, Vancouver

(co-organized with C. Doran, M. Lalin, J. Lewis, and G. Pearlstein)

PIMS
Postdoctoral Training School on Stochastic Dynamics and Hodge Theory,
March 11-15, 2019, Edmonton

(co-organized with C. Doran and G. Pearlstein)

Link to old FRG website (incl. associated workshops)

Recent
advances in Hodge theory, June 10-20, 2013, Vancouver

(co-organized with J. Lewis and G. Pearlstein)
photos

Summer
school notes and schedule /
Conference
notes and schedule /
Proceedings
volume

Algebraic
Geometry seminar
Instructions
for Math
Department Colloquium

D-module
seminar
Washington University Math Circle

**Current Teaching:**

Calculus of Several Variables

(Graduate) Algebra II

**Some Course Notes:**

(Graduate) Algebra I

Honors Mathematics II

Honors Mathematics I

Linear Algebra

(Graduate)
Complex Analysis II

(Graduate)
Complex Analysis I

Hodge
Theory
Number Theory and Cryptography (book)

Algebraic cycles
Undergraduate Algebraic Geometry (book)

**Research:**

CV updated November 2020

A brief description of some of my past work

Recent talks on Nilpotent cones, Normal
functions, and Adjoint varieties

Older talks on Regulator maps, Mumford-Tate groups and
Normal functions

NSF grants: Algebraic
Cycles, Hodge theory, and arithmetic (2011-14);

FRG:
Hodge Theory, Moduli, and Representation Theory (2014-19); FRG website

Postdoctoral associates: Ivan Horozov
(2011-2015); Patricio
Gallardo (2017-2019); Humberto Diaz (current)

Current Ph.D. Students: Soumya Sinha Babu; Ben Castor; Xiaojiang
Cheng; Haohua Deng

Ph.D. Graduates: Ryan Keast (2016); Genival da Silva Jr. (2016);
Yu Yang (2017); Muxi Li (2018), Tokio Sasaki (2019)

**Publications:**

**1.** with V. Golyshev and T. Sasaki, *Apéry extensions*, preprint, 2020. (link)

**2.** *Unipotent extensions and differential equations (after Bloch-Vlasenko)*,
preprint, 2020. (link)

**3.** with R. Laza, *Hodge theory of degenerations, (II): vanishing
cohomology and geometric applications*, preprint, 2020.
(link)

**4.** with P. Gallardo and L. Schaffler, *Geometric interpretation of
toroidal compactifications of moduli of points in the line and cubic surfaces*,
preprint, 2020. (link)

**5.** with R. Laza and M. Saito, *Smoothing of rational
singularities and Hodge structure*, preprint, 2019. (link)

**6.** with R. Laza, *Hodge theory of degenerations, (I):
consequences of the
decomposition theorem*, to appear in Selecta Math. (link)

**7.** with M. Li, *Two applications of the integral regulator*,
preprint, 2018. (link)

**8.** *Counting, sums, and series*, preprint, 2018, to appear in
ASMI volume.
(pdf)

**9.** *Motivic irrationality proofs*, preprint, 2017. (link)

**10.** with G. Pearlstein and C. Robles, *Polarized relations on
horizontal SL(2)s*, Documenta Math. 24 (2019), 1179-1244. (link)

**11.** with P. del Angel, C. Doran, J. Iyer, J. Lewis, S.
Mueller-Stach, and D. Patel, *Specialization of cycles and the K-theory
elevator*, CNTP 13 (2019), 299-349. (link)

**12.** with Y. Yang, *An explicit basis for the rational higher Chow
groups of abelian number fields*, Ann. K-theory 3 (2018), 173-191. (link)

**13.** with C. Robles, *Variations of Hodge structure and orbits in
flag varieties*, Adv. Math. 315 (2017), 27-87. (link)

**14.** with S. Bloch and P. Vanhove, *Local mirror symmetry and the
sunset Feynman integral*, ATMP 21 (2017), 1373-1453. (link)

**15.** with C. Robles, *Classification of smooth horizontal Schubert
varieties*, preprint, 2016, Euro. J. Math. 3 (2017), 289-310. (link)

**16.** with R. Keast, *Normal functions over locally symmetric
varieties*, SIGMA 14 (2018), 116-133. (link)

**17.** with J. Lewis and P. Lopatto, *Simplicial Abel-Jacobi maps
and
reciprocity laws*, J. Alg. Geom. 27 (2018), 121-172. (link)

**18.** with G. da Silva Jr. and G. Pearlstein, *Arithmetic of
degenerating principal variations of Hodge
structure: examples arising from mirror symmetry and middle
convolution*, Canad. J. Math. 68 (2016), 280-308. (link)

**19.** with S. Bloch and P. Vanhove, *A Feynman integral via higher
normal functions*, Compositio Math. 151 (2015), 2329-2375. (link)

**20.** with I. Horozov, appendix to *Reciprocity laws on
algebraic surfaces via iterated integrals*, J. of
K-Theory 14 (2014), 304-310. (pdf)

**21.** *Algebraic and arithmetic properties of period maps*, in
"Calabi-Yau varieties: arithmetic, geometry, and physics", 173-208,
Fields Inst. Monogr. 34, Toronto, ON, 2015. (pdf)

**22.** with G. Pearlstein, *Naive boundary strata and nilpotent
orbits*, Ann. Inst. Fourier 64 (2014), 2659-2714. (pdf)

**23.** with C. Doran, *Algebraic cycles and local quantum
cohomology*, CNTP 8 (2014), 703-727. (pdf)

**24.** with P. Griffiths and M. Green, "Hodge Theory,
Complex Geometry and Representation Theory", CBMS Regional Conference Series in
Mathematics, Number 118, AMS, Providence, 2013.

**25.** *Cup products in automorphic cohomology: the case of
Sp*_{4}, in "Hodge Theory, Complex Geometry,
and Representation Theory (Doran, Friedman, Nollet, Eds.)", Contemp. Math.
608, AMS, Providence, 2014, 199-234. (pdf)

**26.** *Notes on the representation theory of
SL*_{2}(**R**), in "Hodge Theory, Complex Geometry,
and Representation Theory (Doran, Friedman, Nollet, Eds.)", Contemp. Math.
608, AMS, Providence, 2014, 173-198. (pdf)

**27.** with J. McCarthy and O. Shalit, *On the isomorphism question
for complete Pick multiplier algebras*, Integral
Equations and Operator Theory **76** (2013), no. 1, 39-53. (link)

**28.** *Indecomposable K*_{1} of elliptically
fibered K3 surfaces: a tale of two cycles, in "Arithmetic and
geometry of K3 surfaces and C-Y threefolds (Laza, Schuett, Yui
Eds.)", Fields Inst. Comm. 67, Springer, New York, 2013, 387-409. (pdf)

**29.** with G. Pearlstein, *Boundary components of Mumford-Tate
domains*, preprint, Duke Math. J. 165 (2016), 661-721. (pdf)

**30.** with P. Griffiths and M. Green, *Special values of
automorphic cohomology classes*, Mem. Amer. Math. Soc. 231 (2014), no.
1088, vi+145pp. (pdf)

**31.** with C. Doran, J. Lewis and X. Chen, *Normal functions,
Picard-Fuchs equations, and elliptic fibrations on K3 surfaces*,
J. Reine Angew. Math. 721 (2016), 43-79. (pdf)

**32.** with C. Doran, *Algebraic *K*-theory of toric
hypersurfaces*, CNTP **5** (2011), no. 2, 397-600. (pdf) (publ.
version)

**33.** with P. Griffiths and M. Green, "Mumford-Tate groups and
domains: their geometry and arithmetic", Annals of Math
Studies, no. **183**, Princeton University Press, 2012. (link)

**34.** *Shimura varieties: a Hodge-theoretic perspective*, in
"Hodge Theory (Cattani et al, Eds.)", Mathematical Notes 49, Princeton
Univ. Press, Princeton, 2014, 525-566. (pdf)

**35.** with X. Chen and J. Lewis, *The sheaf of nonvanishing
meromorphic functions in the projective algebraic case is not acyclic*,
C.R. Acad. Sci. Paris, Ser. I **348** (2010), 291-293 (pdf)

**36.** with G. Pearlstein, *Normal functions and the
GHC*, RIMS Kokyuroku **1745** (2011), 71-75. (pdf)

**37.** with P. Griffiths and M. Green, *Mumford-Tate domains*,
Bollettino dell' UMI (9) **III** (2010), 281-307. (pdf)

**38.** with G. Pearlstein, *An exponential history of functions
with logarithmic growth*, in "Topology of Stratified
Spaces", MSRI Pub. 58, Cambridge University Press, New York, 2011.(pdf)

**39.** with P. Griffiths and M. Green, *Some enumerative global
properties of variations of Hodge structure*, Moscow Math. J. **9**
(2009), 469-530.(pdf)

**40.** with P. Griffiths and M. Green, *Neron models and boundary
components
for degenerations of Hodge structures of mirror quintic type*,
in "Curves and Abelian Varieties (V. Alexeev, Ed.)", Contemp. Math
**465**
(2007), AMS, 71-145. (pdf)

**41.** with P. Griffiths and M. Green, *Neron models and limits of
Abel-Jacobi mappings*, Compositio Math. **146** (2010), 288-366.(pdf)

**42.** with J. Lewis, *The Abel-Jacobi map for higher Chow groups,
II*,
Invent. Math **170** (2007), 355-420. (link)

**43.** with J. Lewis and S. Mueller-Stach, *The Abel-Jacobi map for
higher
Chow groups*, Compositio Math. **142** (2006), no. 2, 374-396. (link)

**44.** *A survey of transcendental methods in the study of Chow
groups
of 0-cycles*, in "Mirror Symmetry V" (Lewis, Yui and Yau, eds.), AMS/IP
Stud. Adv. Math. **38** (2006), 295-350. (pdf)

**45.** *Exterior products of zero-cycles*, J. reine. angew. Math.
**142** (2006), 1-23. (link)

**46.** *Higher Abel-Jacobi maps for 0-cycles*, J.
K-Theory **2** (2008), 41-101. (link)

**47.** *A regulator formula for Milnor K-groups*, K-Theory
**29**
(2003), 175-210. (pdf)

**48.** *An elementary proof of Suslin reciprocity*, Canad. Math.
Bull.
**48** (2005), v. 2, 221-236. (pdf)

**49.** "Geometric construction of regulator currents with applications
to
algebraic cycles", Princeton University Ph. D. Thesis, 2003.
(ps)

**Miscellany:**

Some musings on groupwork, blackboards, and plague

Eine mutige Lebensphilosophie und starke Pharma-Prioritaten in Bonn

Beilinson's beautiful essay
on the spirit of mathematics

A guide if your complex functions get too
complex

A bit of St. Louis in Venice

Abel-Jacobi graffiti in Durham

An intriguing interdisciplinary monograph in the
Durham library

Durham cathedral

Today's weather forecast

Old undergraduate
project ideas

Math Club talks on elliptic billiards, p-adics, and discrete
Fourier transform

Old Putnam
practice notes