Tim Marrinan

Tim Marrinan

Graduate Research/Teaching Assistant
PhD Candidate in Mathematics (Colorado State University), expected 2016.
MS in Mathematics (Colorado State University), 2013.
BA in Applied Math and Geology (Whitman College), 2008.
Office: Weber 234
E-mail: marrinan@math.colostate.edu
Mailing Address:
Department of Mathematics
1874 Campus Delivery
Colorado State University
Fort Collins, CO 80523

Research Interests:

Linear Algebra, Riemannian Geometry, Geometric Data Analysis, Optimization, Computer Vision, Manifold Learning

Professional Documents:

Curriculum Vitae (PDF)
Research Statement (PDF)
Teaching Statement (PDF)


  1. (To Appear) Adaptive Visual Sort and Summary of Micrographic Images of Nanoparticles for Forensic Analysis.
    E. Jurrus, N. Hodas, N. Baker, T. Marrinan, and M. Hoover.
    Technologies for Homeland Security (HST), IEEE Symposium on. (2016)
    Preprint PDF

  2. Flag-based Detection of Weak Gas Signatures in Long-Wave Infrared Hyperspectral Image Sequences.
    T. Marrinan, J.R. Beveridge, B. Draper, M. Kirby and C. Peterson.
    Proc. SPIE 9840: Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXII. (2016).
    Preprint PDF

  3. Flag Manifolds for the Characterization of Geometric Structure in Large Data Sets.
    T. Marrinan, J. R. Beveridge, B. Draper, M. Kirby, and C. Peterson.
    Numerical Mathematics and Advanced Applications-ENUMATH 2013. 103 (2015): 457-465.
    Open Access PDF

  4. Finding the subspace mean or median to fit your need.
    T. Marrinan, J. R. Beveridge, B. Draper, M. Kirby, and C. Peterson.
    Computer Vision and Pattern Recognition (CVPR), IEEE Conference on. (2014): 1082-1089.
    Open Access PDF
    The software package associated with this publication can be found at: www.cs.colostate.edu/~vision/summet/

  5. A Flag Representation for Finite Collections of Subspaces of Mixed Dimensions.
    B. Draper, M. Kirby, J. Marks, T. Marrinan, and C. Peterson.
    Linear Algebra and its Applications 451 (2014): 15-32.
    Open Access PDF

  6. The Flag of Best Fit as a Representative for a Collection of Linear Subspaces.
    T. Marrinan
    Master's Thesis, Colorado State University (2013).
    Retrieved from http://hdl.handle.net/10217/81042
    Open Access PDF



None: Research Assistant

Office Hours:



MATH 261: Calculus for Physical Scientists III

Incoming GTA Mentor - Fall 2014

Math 151: Mathematical Algorithms in Matlab (Session 2)

Math 151: Mathematical Algorithms in Matlab (Session 1)

Math 152: Mathematical Algorithms in Maple

Math 160: Calculus 1


Pattern Analysis Lab Homepage

Mind's Eye Project Homepage

SIAM Student Chapter at Colorado State

CSU Thesis LaTeX Class

Whitman College Mathematics Homepage

Choice City Hops Ultimate Frisbee

Whitman College Ultimate Frisbee

Free Online Calculus Books written by Whitman Math Faculty

Free Online Introduction to Higher Math Book written by Whitman Math Faculty