Content: P. G. Casazza, J. Cahill, J. I. Haas, and J. C. Tremain, Constructions of biangular tight frames and their relationships with equiangular tight framesS. Botelho-Andrade, P. G. Casazza, D. Cheng, J. Haas, T. T. Tran, J. C. Tremain, and Z. Xu, Phase retrieval by hyperplanesD. Ellis, E. Hayashi, and S. Li, Tight and full spark Chebyshev frames with real entries and worst-case coherence analysisR. Aceska, J.-L. Bouchot, and S. Li, Fusion frames and distributed sparsityM. Bownik, The Kadison-Singer problemA. G. Baskakov and I. A. Krishtal, Spectral properties of an operator polynomial with coefficients in a Banach algebraX. Chen, Kaczmarz algorithm, row action methods, and statistical learning algorithmsR. Balan, M. Singh, and D. Zou, Lipschitz properties for deep convolutional networksM. Begue and K. A. Okoudjou, Invertibility of graph translation and support of Laplacian Fiedler vectorsJ.-P. Gabardo, Weighted convolution inequalities and Beurling densityL. De Carli and P. Vellucci, $p$-Riesz bases in quasi shift invariant spacesD. E. Dutkay and I. Kraus, On spectral sets of integersI. Long, Spectral fractal measures associated to IFS's consisting of three contraction mappingsJ. E. Herr, P. E. T. Jorgensen, and E. S. Weber, A matrix characterization of boundary representations of positive matrices in the Hardy spaceM. Mohammad and E.-B. Lin, Gibbs effects using Daubechies and Coiflet tight framelet systemsY. H. Kim, Conditions on shape preserving of stationary polynomial reproducing subdivision schemesD. Alpay, P. E. T. Jorgensen, and I. Lewkowicz, $W$-Markov measures, transfer operators, wavelets and multiresolutions.