Anthony Iarrobino

Professor

I grew up in Marblehead, Massachusetts, a seacoast town, in a family of artists (members of Folly Cove Designers, painting, pottery, design), went to high school there and at Phillips Academy, to M.I.T. as an undergraduate 1961-1964, and as a graduate student, Ph.D. 1970. I then moved to Austin, Texas, a city of country and folk music, teaching at University of Texas for eight years, before coming to Northeastern in 1978. I have spent several years in France, one at University of Nice as a Senior Fulbright Fellow, another in Paris, as an NSF-CNRS exchange fellow; and have made other research visits to Europe, both West and East, as well as to Japan and Vietnam.

Research

PhD received from MIT

Areas of Interest

Algebraic geometry, commutative rings and their deformations, singularities of maps, families of points on a variety (Hilbert scheme of points), Gorenstein algebras, Waring problem for forms, hook differences of partitions, catalecticant matrices, level algebras, commuting nilpotent matrices.

Papers and Publications

Publications (list)
Annotated publication list
(Includes brief descriptions, and some context)
CV (pdf)

Overheads from talk "Irreducible components of families of level algebras.''
at Fields Insitute, Toronto, August 2006 (pdf). See related article, ArXiv posting just below.

Article (with M. Boij) ``Reducible family of height three level algebras'', J. Algebra 321 (2009), pp. 86-104.
See: ArXiv AC 0707.2148 (ArXiv version).

Article (with R. Basili): ``Pairs of commuting nilpotent matrices, and Hilbert function,'' J. Algebra Vol 320/3 (2008), pp 1235-1254.
See: ``Pairs of commuting nilpotent matrices, and Hilbert function'' ArXiv AC: 0709.2304 17p.

Overheads from a talk "An algebra of commuting nilpotent matrices" at IMAR, Bucharest, July 3, 2008. Work joint with R. Basili.

Article (with R. Basili and L. Khatami) "Commuting nilpotent matrices and Artinian algbebras", J. Commutative Algebra (2) (Fall 2010), p. 295-325 (Froberg volume).

Book:

Power Sums, Gorenstein Algebras, and Determinantal Varieties


by A. Iarrobino and V. Kanev, SLNM #1721, 346+xxix p., December, 1999.

Book Homepage

Table of Contents
Short Description
Preface
Directions to download Introduction: Informal History and Brief Outline
Short Description of Appendix: The Gotzmann Theorems and the Hilbert scheme (with S.L. Kleiman)

drawing by Dad, for frontispiece of book

Teaching

UNDERGRADUATE TEACHING, ADVISING

Courses: I often teach Math 1242, Calculus II for majors in Health Sciences, or Geology, Economics, Psychology. These sections are oriented toward applications of calculus to motion and problems involving the connection between rate of flow of liquids and the amount; they require use of a graphing calculator. In Math 1242 we also discuss probability density functions, as an example of the connection between rate and amount, multivariable calculus, and differential equations

For Math majors and others, I have enjoyed teaching the advanced electives (or their previous quarter analogues) Math 3175 Group Theory; also old Math U576 Rings and Fields, also Math 2331 Linear Algebra, and, in Spring 2011, Math 3533 Combinatorial Mathematics.

More on my undergraduate teaching philosophy, and advising.

Current teaching
In Fall 2011 I will teach one section of Math 1242 Calculus 2 (coordinator)
 Math 1242 Fall 2011 General Syllabus Text, list of HW problems.
 Math 1242 Fall 2011 Information/policies Expectations, grading, other policies.

and

Math 1365 Introduction to Mathematical Reasoning (one section, MWTH at 1:35 PM).
Math 1365 Fall 2011 General syllabus. Text, grading, other policies.

Undergraduate research
A student from Math 3175 Spring is working on a combinatorics topic related to commuting nilpotent matrices. If you are a NU mathematics major who has taken group theory and combinatorics, and wish to discuss doing undergraduate research in a topic related to algebra and combinatorics, please feel free to contact me. For First or Second year students, you might consider the PRISM program.

Retrospective Info

In Spring 2011 I taught Combinatory Mathematics, which emphasizes problem solving
 Math 3353 Spring 2011 Syllabus Text, list of HW problems
I provided work sheets for in class problems and we explored some topics (partially ordered sets) using both text and supplementary notes. Students found the course understandable, even fun (instructor rating 3.9). This could be a good foundation for some undergraduate research.

Group Theory  Math 3175 Spring 2011 Syllabus
Modified from previous times I taught it. We began with much more emphasis on the basic material from chapter 0, involving number theory (Greatest common divisor, least common multiple), and learning to understand and write proofs. This helped students prepare for later sections. A small class allowed for individual work on problems from the text and some worksheets. A few students who got behind due to unusual events/illness/senior tasks spent extra time, used office hours, and finished doing quite well. As usual there was a reflection component, beginning with Thurston's article "What is a proof"; many students liked this aspect (Instructor rating 3.7).

Past undergraduate courses


GRADUATE TEACHING, GRADUATE ADVISING, MENTORING and VISITING SCHOLARS

Graduate Courses
I have taught Algebra III (Galois Theory), Commutative Algebra, Algebraic Geometry, as well as more specialized reading courses.

Ph.D. Students
I have been dissertation advisor to 3 Ph.D. students,: David Berman, Abderrahim Miri and Susan Diesel.
I was informal advisor to Art Weiss who completed his Ph.D. in 2006 at Tufts, on work begun with me. His advisor was George McNinch. Art's Ph.D. dissertation is posted to ArXiv: Some non-unimodal level algebras

Ph. D. candidate Sepideh Shafiei is currently working on catalecticant varieties and related topics.

Postdoctoral student: Leila Khatami (2008-2011 at NU, now Assistant Professor at Union College) is coauthor of "Commuting nilpotent matrices and Artinian algbebras", J. Commutative Algebra (2) (Fall 2010), p. 295-325 (Froberg volume, see link above), coauthor of a preprint ``Bound on the Jordan type of a generic nilpotent matrix commuting with a given matrix'' (2011), and has written a preprint: ``The poset of the nilpotent commutator of a nilpotent matrix'' (2011).

I have had a number of postdoctoral visitors, and was senior mentor to two NSF Postdoctoral Fellows at Northeastern, Carol Chang, in algebraic combinatorics, and Hal Schenck in commutative algebra. [These are a nationally competitive fellowship, and only about 100 are awarded through all the US, each year].

J. Yameogo (Families of graded ideals): Joachim Yameogo's Home page at University of Nice.



Clare D'Cruz (Multivariate Hilbert functions),Clare D'Cruz's Home page at Chennai Mathematical Institute, Madras, India.

Visiting Scholars
Roberta Basili, summer 2003,2006, 2008 (working with J. Weyman and I).
Mats Boij: various 2006-2010
Hema Srinivasan. January-June 2000.
Ruth Michler, Associate Professor, Univ. North Texas: NSF POWRE VISITOR for 2000-2001.

Other

Tragic accident

Dr. Ruth Michler died Nov. 1, 2000 in an pedestrian-construction truck accident a block from the Mathematics Department. She was returning to the Department on her bike, to get printout, to apply for a Radcliffe Bunting Fellowship for 2001-2002. She had just given talks at BU's Algebra Seminar on Mon. Oct 30, and to NU's GASC Seminar on Mon. Oct 16.

Volume of Contemporary Mathematics in memory of Ruth I. Michler

Other Academic Activities:

Co-Organizer of GASC Seminar, Co-Organized "Syzygy" Conference at NU, Mentoring, Issues in Academic Tenure Process, Referee, Reviews by A. Iarrobino (requires access to MathSciNet).

Sabbatical 2007: Projects with R. Basili, M. Boij, Participant in Moduli Year at Mittag-Leffler Institute.

Other Interests:

Hiking, Swimming, Sea Kayaking, International Exchange/Visits, Art and Design, Psychology/Counseling, Dance

Some other math links:

Visual Calculus (U. Tenn)

AWM site (Association for Women in Mathematics): this site is of interest not only to women. It also has links to many resources at many levels, including programs and information for parents, teachers, and students in K-12 math.

AMS (American Mathematical Society): a main resource for mathematicians, and students or others interested in math.

Commutative Algebra Center This has many links to commutative algebra sites, conferences in Commutative Algebra, commutative algebraists.

The Kepler Sphere packing conjecture solved Stacking oranges in crates as usual is the best way! (this is T. Hale's homepage, with details)

Fermat's Last Theorem (from Wolfram's MathWorld). Proven by A. Wiles, with an assist by R. Taylor, 1995 Annals Paper.

Mark Haiman's proof of the n! conjecture,using the ``Isospectral'' punctual Hilbert scheme, see "Hilbert schemes, polygraphs, and the Macdonald positivity conjecture".

   My review for AMS of Mark's related earlier article, "$q,t$-Catalan numbers and the Hilbert scheme"

7 Millennium Problems (Clay Mathematics Institute)Prize problems for the next century. The site contains brief descriptions of each problem for the curious lay person, as well as links to downloadable technical accounts by experts (pdf files).

Math for K-12 students, or recreation

Geometry CenterThe Center is no longer in existence, but the site is maintained.
Science U.Fun site, maintained by a commercial spin-off of the Geometry Center.
Sonia Kovalevsky High School Mathematics Days
Ask Dr. Math(Swarthmore College Project)
Education resources (AWM)

A few other links:

Boston Sea Kayaking Club

Some organizations involved with peacework:

American Friend's Service Committee
Physicians for Social Responsibility
Medicins Sans Frontieres