Ryan R. Martin I am a professor at Iowa State University and currently a Scott Hanna Professor. I am Editor-in-Chief of the journal Order, published by Springer. My research is partially supported by a grant from the Simons Foundation (#709641, 2020-2025). My fields of interest are extremal poset theory, graph theory and extremal and probabilistic combinatorics.
My research is partially supported by a grant from the Simons Foundation (#709641, 2020-2025) I received an award from the Distinguished Guest Fellowship Programme in Hungary by the Hungarian Academy of Sciences (MTA) and was based at the Alfréd Rényi Institute of Mathematics in Budapest from July 2023 through January 2024. I was a visitor of Maria Axenovich at the Karlsruhe Institute of Technology, Germany via the German Academic Exchange Service (DAAD) in 2020. I was a Fulbright US Scholar as part of the Budapest Semesters in Mathematics program at the Alfred Rényi Institute of Mathematics in 2019.
email address:   rymartin@iastate.edu website:   http://rymartin.name Phone#: 515-294-1282 DEPARTMENT OF MATHEMATICS 428 CARVER HALL 411 MORRILL ROAD AMES, IOWA 50011-2104 Current CV ISU Math Office#: 515-294-1752 Publications ISU Math Fax#: 515-294-5454 arXiv WebEx room: rymartin MathSciNet

Latest preprints: Tiling randomly perturbed bipartite graphs, with E. Gomez-Leos, submitted. On the proper rainbow saturation numbers of cliques, paths, and odd cycles, with D. Baker, E. Gomez-Leos, A. Halfpap, E. Heath, J. Miller, A. Parker, H. Pungello, C. Schwieder, N. Veldt, submitted. On a generalization of a result of Kleitman, with B. Patkós, submitted. Induced saturation of the poset 2C2, with N. Veldt, submitted. B-colorings of planar and outerplanar graphs, with M. Ruszinkó, and G.N. Sárközy, submitted. Saturation of k-chains in the Boolean lattice, with N. Veldt, submitted. On the rainbow planar Turán number of paths, with E. Gyõri, A. Paulos, C. Tompkins, and K. Varga, submitted.

The maximum number of odd cycles in a planar graph, with E. Heath and C. Wells, J. Graph Theory, to appear. A note on the Erdős matching conjecture, with B. Patkós, Studia Sci. Math. Hungar., to appear. On graphs embeddable in a layer of a hypercube and their extremal numbers, with M. Axenovich and C. Winter, Ann. Comb.  28 (2024),1257-1283. [Journal Link]. Proper edge colorings of planar graphs with rainbow C4-s, with A. Gyárfás, M. Ruszinkó, and G.N. Sárközy, J. Graph Theory 107 (2024), no. 4, 833-846. [Journal Link]. The endomorphism conjecture for graded posets of width 4, with M. Bóna, Studia Sci. Math. Hungar. 60 (2023), no. 2-3, 133-142. [Journal Link]. The maximum number of 10- and 12-cycles in a planar graph, with C. Cox, Discrete Math. 346 (2023), no. 2, Paper No. 113245. [Journal Link].

Teaching: Fall 2024: M166: Calculus II Time/Room: MWF 3:20-4:10, Lebaron 1210 Textbook: Thomas' Calculus, Fifteenth Edition by Hass, Heil, Bogacki, and Weir Canvas:  https://canvas.iastate.edu

Other materials: Edit distance survey: The edit distance in graphs: methods, results and generalizations, Recent Trends in Combinatorics, 31--62, IMA Vol. Math. Appl., 159, Springer, Cham, 2016. [Errata] Lake Michigan Workshop slides: "The edit distance on graphs": Part I, Part II, Part III Click here: Slides from the Pittsburgh+Pirate Minisymposium Schedule on Randomly Perturbed (Hyper)graphs. Current and former students. Discrete Math seminar page.

Week of M Dec 09 - F Dec 13: Out of Town

Final Exam schedule M Dec 16 - Sa Dec 21   M 16 T 17 W 18 Θ 19 F 20 Sa 21 7:30-9:30             9:45-11:45 Appointment Off-Campus       Exam Grading Carver Hall 12:00-2:00   M1660 Exam Review Lebaron 1210 12:30-1:45     2:15-4:15         4:30-6:30       Final Exam: M1660: Calculus II Room TBA 7:00-9:00

Spring Semester 2025: T Jan 21 - F May 16 MWF M T W Θ F TΘ [8] 7:45-8:35           8:00-9:15 [9] 8:50-9:40           9:30-10:45 [10] 9:55-10:45 M5680: Enumerative Combinatorics and Ordered Sets Carver 190   M5680: Enumerative Combinatorics and Ordered Sets Carver 190   M5680: Enumerative Combinatorics and Ordered Sets Carver 190 [11] 11:00-11:50           11:00-12:15 [12] 12:05-12:55           12:40-1:55 [1] 1:10-2:00   Colloquium Carver TBA 1:10-2:00   Faculty Meeting Carver TBA 1:10-2:00   [2] 2:15-3:05       Discrete Math Seminar Carver 401 2:10-3:00   2:10-3:25 [3] 3:20-4:10           3:40-4:55 LAS Rep. Assembly Catt 302 3:40-5:00 [4] 4:25-5:15

Jun 16-24 International Conference on Graph Theory and its Applications (ICGTA 24), Jun 20-22 Talk Title: "Counting cycles in planar graphs" Presidency University Bengaluru, India Wed-Wed Jul 17-24 Ph.D. Defense: Christian Winter, Jul 18 Karlsruhe Institute of Technology Karlsruhe, Germany Wed-Sun Jul 24-Aug 04 Focused workshop on "Generalized and Planar Turán Problems", Jul 29-Aug 02 Rényi Institute Budapest, Hungary Wed-Sun Aug 14-18 Research Visit to Zhanar Berikkyzy Fairfield University Fairfield, CT Fri-Sun Sep 13-15 AMS Fall Central Sectional Meeting #1198, Sep 14-15 SS15A AMS Special Session on Graph Theory Talk Title: "Counting cycles in planar graphs" University of Texas at San Antonio San Antonio, Texas Mon-Fri Nov 25-29 THANKSGIVING BREAK Thu Dec 05 M1660: Exam 3 ISU, Ames, IA Tue-Thu Dec 10-12 MathConnect 2024 Talk title: "Counting cycles in planar graphs" Dhahran, Saudi Arabia Mon-Thu Dec 16-19 EXAM WEEK Wed-Sat Jan 08-11, 2025 Joint Mathematics Meetings #1203, Jan 10 SS 28A AMS Special Session on Coloring Problems in Combinatorics Talk Title: "B-colorings of planar and outerplanar graphs" Seattle Convention Center and the Sheraton Grand Seattle Seattle, Washington Mon-Fri Mar 17-21, 2025 SPRING BREAK Ames, IA Mon-Fri Jun 16-27, 2025 Graduate Research Workshop in Combinatorics (GRWC) University of Vermont Burlington, VT Mon-Fri Jun 30- Jul 11, 2025 Scheduled visit by Debmalya Bandyopathyay, University of Birmingham Iowa State University, Ames, IA

Legend: Classroom Meeting Office Occasional Event

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Ryan Martin's Web Page / Revised 03 December 2024.