Preface.- Floer field philosophy (K. Wehrheim).- An elementary fact about unlinked braid closures (E. Grigsby & S. M. Wehrli).- Symmetric unions without cosmetic crossing changes (A. H. Moore).- The total Thurston–Bennequin number of complete bipartite Legendrian graphs (D. O’Donnol and E. Pavelescu).- Coverings of open books (T. Ito and K. Kawamuro).- Understanding locomotor rhythm in the lamprey central pattern generator (N. Massarelli, A. Yau, K. Hoffman, T. Kiemel and E. Tytell).- Applications of knot theory: using knot theory to unravel biochemistry mysteries (C. R. Price).- Metapopulation and non-proportional vaccination models overview (M. Cruz-Aponte).- Controlling a cockroach infestation (H. Albert, A. Buchmann, L. Ohm, A. Radunskaya, and E. Swanson).- The impact of violence interruption on the diffusion of violence: a mathematical modeling approach (S. A. Wiley, M. Z. Levy, and C. C. Branas).- Cramér’s theorem is atypical (N. Gentert, S. Kim, and K. Ramanan).- Counting and partition function analysis for subordinate killed Brownian motion (S. Bryant).- A statistical change point analysis approach for modeling the ratio of next generation sequencing reads (J. Chen and H. Li).- A center-level approach to estimating the effect of center characteristics on center outcomes (J. Le-Rademacher).- False discovery rate based on extreme values in high dimension (J. Park, D. Park, and J. W. Davis).- Asymptotic and oscillatory behavior of dynamic equations on time scales (R. Higgins).- Using applications to motivate the learning of differential equations (K. M. Bliss & J. M. Libertini).- What is a good question? (B. Servatius).- Information measures of frequency distributions with an application to labeled graphs (C. Joslyn & E. Purvine).- Integrating and sampling cuts in bounded treewidth graphs (I. Bezáková, E. W. Chambers, and K. Fox).- Considerations on the implementation and use of Anderson acceleration on distributed memory and GPU-based parallel computers (J. Loffeld & C. S. Woodward).