Joseph (JM) Landsberg, professor of mathematics

Office: Blocker 601H
Office hours: Tues. 1:30-2:30pm and Thurs. 10-11am or by appointment
E-mail: jml@math.tamu.edu
TAMU math dept homepage
Supported by NSF grant DMS-1405368


Teaching  Fall 2017: Quantum Computing and information theory
Meeting: MWF 12:40-1:30  pm Blocker 121
 

 


Education

Research: Geometric questions originating in theoretical computer science, Algebraic geometry, differential geometry, Exterior differential systems, Homogeneous varieties,  (Click here for a summary of my research.)

 


I organize and co-organize:
Geometry seminar, meeting  Mondays 3-4pm Bloc 220 and Fridays 4-5pm Bloc 628.
Working seminar for post-docs and graduate students meeting Tuesdays, Blocker 628, 5-6pm 

Everyone is welcome to the seminars, graduate students
are particularly encouraged to attend.
TAMU seminar calendar
My CV (last updated 9/17)

My  travel plans



I am on the editorial board of Foundation of Computational MathematicsDifferential Geometry and its Applications, and  Linear Algebra and its Applications.  DGA has expanded its scope to include articles on applications of geometry to complexity theory.
PAPERS/PREPRINTS in past 5 years

Survey articles
         Books:

          Geometry and complexity theory: Cambridge University Press studies in advanced mathematics 169.   Click here for a 20% discount and blurb        Click here to see a draft copy

            Tensors: Geometry and Applications.
         AMS GSM 128. Click here to see table of contents and preface, and to order.
          Click here for corrections and additions
  Cartan For Beginners: Differential geometry via moving frames and exterior differential systems,
Second Edition
(with T. Ivey) AMS GSM 175
http://bookstore.ams.org/gsm-175


Slides of recent talks:
Symmetry versus Optimality (SIAM-AG, Atlanta 7/17)
Complexity theory and geometry (Berlin Mathematical School colloquium 2/15)
Perm v. det: an exponential lower bound assuming symmetry (Innovations in Theoretical Computer Science 1/16)
math reviews of all published papers


PhD students:
Current students:  Kashif Bari, Austin Conner,  and Yao Wang

Graduated students:

Fulvio Gesmundo, May 2017, Geometry and representation theory in the study of matrix rigidity
currently post-doctoral fellow at U. Copenhagen

Cameron Farnsworth, August 2016, THE POLYNOMIAL WARING PROBLEM AND THE DETERMINANT
currently post-doctoral fellow at Yongsei Univ. (Seoul)

Yonghui Guan, August 2016, EQUATIONS FOR CHOW VARIETIES, THEIR SECANT VARIETIES AND
OTHER VARIETIES ARISING IN COMPLEXITY THEORY

currently
Computer Vision Algorithm Scientist at MINIEYE in Shenzhen China.

Curtis Porter, August 2016 THE LOCAL EQUIVALENCE PROBLEM FOR 7-DIMENSIONAL, 2-NONDEGENERATE CR
MANIFOLDS WHOSE CUBIC FORM IS OF CONFORMAL UNITARY TYPE,

currently post-doctoral fellow at NC State Univ.

Yang Qi, PhD August 2013 Geometry of Feasible Spaces of Tensors
determined defining equations for the third secant variety of a triple Segre product and closedness of tensor network states,
currently post-doctoral fellow at U. Chicago.

Ke Ye,   PhD August  2012, IMMANANTS, TENSOR NETWORK STATES AND THE GEOMETRIC
COMPLEXITY THEORY PROGRAM
determined symmetry groups of immanents, and closedness of tensor network states,
obtained Dickenson postdoctoral fellowship at U. Chicago, currently tenure track at Chinese  Academy of Science.

Ming Yang,   PhD Sept. 2012, 
On partial and generic uniqueness of block term tensor decompositions in signal processing, solving  questions originating in signal processing.
         Luke Oeding,  PhD May 2009,     Defining equations of the varietyof principal minors solved a conjecture of Holtz and Sturmfels.
NSF international postdoctoral fellow (Florence), UC Berkeley post-doc, currently tenure track at Auburn U.

           Frederic Holweck, PhD fall  04,  Dual varieties, simple singularities and simple Lie algebras
currently tenured faculty at U. Belfort.
                   Here is a summary of his results in English

           E. Allaud, PhD spring 03, 
Nongenericity of variations of Hodge structure for hypersurfaces of high degree,
          
 
  Now available:

Sungbook: A Collection of Korean Short Stories 

by Suil Kang (Author)


available at  Amazon (both paperback and kindle):
   
Various links
tamuwebmail