Suil O's Home page

Visiting Assistant Professor
Department of Mathematics
The College of William and Mary

Email: so @ wm . edu
Office: 117 Jones Hall (757-221-2022) .......... Hours: Mon, Wed, Fri 9am - 10am or 11am - noon or by appointment.

I am Suil O, a Visiting Assistant Professor in the Mathematics Department at The College of William and Mary.

I received my Ph.D from University of Illinois at Urbana-Champaign under the advisement of Professor Douglas B. West .

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Research Interests

My research interests lie in graph theory , particularly extremal problems (on regular graphs), the relationship between graph parameters and eigenvalues, and structural graph theory.

My Brief CV

Ph.D (2011): University of Illinois at Urbana-Chmapaign, Advisor: Douglas B. West


  • Spring 2009 : List of Teachers ranked as Excellent (Univ. of Illinois)
  • Fall 2010 : List of Teachers ranked as Excellent (Univ. of Illinois)
  • Current Course (Spring 2013): Math 111 (Calculus 1)

    Papers (Published)

  • Longest Cycles in k-connected Graphs with Given Independence Number (with Douglas B. West and Hehui Wu) J. Combinatorial Theory (B) 101, (2011) 480-485 (Fouquet-Jolivet Conjecture (1976) became WOW Theorem, where WOW is a combination of the first letters of the authors' last names.)
  • Matching, and Edge-Connectivity in Regular Graphs (with Douglas B. West) European. J. Combinatorics 32, (2011), 324-329 (4th Most Downloaded EJC Paper in June and July)
  • Edge-connectivity, Matching, and Eigenvalue in Regular Graphs (with Sebastian M. Cioaba) SIAM. J. Discrete. Math 24, (2010) 1470-1481 (2nd Most Downloaded SIDMA Paper in November 2010, 3rd in December 2010, 5th in January 2011, 6th in February, 20th in March, 4th in April, 4th in May 2011)
  • Balloons, Cut-edges, Matchings and Total domination in Regular Graphs of Odd Degree(with Douglas B. West) J. Graph Theory 64, (2010) 116-131

  • Presentations (Selected)

  • Seminar, Yeungnam University, Gyeongsan, Korea, June 2012
  • 52nd KPPY Combinatorics Seminar, POSTECH, Pohang, Korea, June 2012
  • Seminar, Pusan National University, Pusan, Korea, Jan 2009, June 2011, May 2012
  • KAIST Discrete Math Seminar, KAIST, Daejeon, Korea, May 2011, May 2012
  • AMS Meeting #1080 (Spring Eastern Section), Special Session on Structural and Extremal Problems in Graph Theory (Invited Talk) George Washington University, Washington, DC, Mar. 17-18, 2012
  • Colloquium , The College of Willaima and Mary, Williamsburg, VA, NoV. 18, 2011
  • Discrete Mathematics Seminar, Virginia Commonwealth University, Richmond, VA, Oct. 11, 2011
  • AMS Meeting #1073 (Fall Southeastern Section), Special Session on New Developments in Graph Theory (Invited Talk) Wake Forest University, NC, Sep. 24-25, 2011
  • Seminar, Konkuk University, Seoul, Korea, May 2011
  • 24th Cumberland Conference on Combinatorics, Graph Theory, and Computing University of Louisvile, Louisville, KY, May 2011
  • AMS Meeting #1068 (Southeastern Section Meeting), Special Session on Applied Combinatorics (Invited Talk) Statesboro, GA, Mar. 12-13, 2011
  • Colloquium, Oakland University, Rochester, MI, Feb. 2011
  • AMS Meeting #1064 (2010 Fall Central Sectional), special session in Graphs and Hypergraphs, Algebraic and Topological Combinatorics (Invited Talk) University of Notre Dame, IN, Nov. 5-7, 2010
  • DM10-15th SIAM Conference on Discrete Mathematics Hyatt Regency Austin, Austin, Texas, June 2010
  • SIAM Annual Meeting (Invited Minisymposium Talk in honor of Daniel Kleitman's 75th birthday) Denver, CO, July 6-10, 2009
  • DM08-14th SIAM Conference on Discrete Mathematics University of Vermont, Burlington, Vermont, June 2008
  • Discrete Mathematics Seminar, University of Delaware, Newark, DE, Oct. 2009
  • Combinatorics Seminar, University of Illinois, Urbana, IL, Oct. 2009

  • Academic Activities

  • Referee Work: SIAM Journal on Discrete Mathematics,Journal of Graph Theory, Electronic Journal of Combinatorics, Discrete Mathematics, Ars Mathematica Contemporanea, Graphs and Combinatorics, Networks

  • myWM

    Earl Gregg Swem Library

    William J. Hargis, Jr Library

    Useful links on Combinatorics

  • Seminar Calendar at UIUC
  • Conferences on Combinatorics
  • Cominatorics at UIUC
  • Mathematics Subject Classification (Graph Theory)
  • MathSciNet search
  • Sebastian M. Cioaba
  • Douglas B. West
  • Hehui Wu

  • Journals

  • Journal of Combinatorial Series B
  • Journal of Combinatorial Series A
  • Linear Algebra and its Appplications
  • Combinatorica
  • Combinatorics, Probability, and Computing
  • Journal of Graph Theory
  • European Journal of Combinatorics
  • SIAM Journal on Discrete Mathematics
  • Electronic Journal of Combinatorics
  • Discrete Mathematics
  • Graphs and Combinatorics

  • last updated : July 3rd 2012