The Complexity of Finding Tangles -- A spectral algorithm for finding maximum cliques in dense random intersection graphs -- Solving Cut-Problems in Quadratic Time for Graphs With Bounded Treewidth -- More Effort Towards Multiagent Knapsack -- Dominance Drawings for DAGs with Bounded Modular Width -- Morphing Planar Graph Drawings Through 3D -- Visualizing Multispecies Coalescent Trees: Drawing Gene Trees Inside Species Trees -- Parameterized Approaches to Orthogonal Compaction -- Hardness of bounding influence via graph modification -- On the Parameterized Complexity of $s$-club Cluster Deletion Problems -- Balanced Substructures in Bicolored Graphs -- On the Complexity of Scheduling Problems With a Fixed Number of Parallel Identical Machines -- On the 2-Layer Window Width Minimization Problem -- Sequentially Swapping Tokens: Further on Graph Classes -- On the Preservation of Properties when Changing Communication Models -- Introduction to Routing Problems with Mandatory Transitions -- Multi-Parameter Analysis of Finding Minors and Subgraphs in Edge-Periodic Temporal Graphs -- Lower Bounds for Monotone $q$-Multilinear Boolean Circuits -- A faster algorithm for determining the linear feasibility of systems of BTVPI constraints -- Quantum complexity for vector domination problem -- Learning through Imitation by using Formal Verification -- Delivery to Safety with Two Cooperating Robots -- Space-Efficient STR-IC-LCS Computation -- The k-center Problem for Classes of Cyclic Words.

This book constitutes the conference proceedings of the 48th International Conference on Current Trends in Theory and Practice of Computer Science, SOFSEM 2023, held in Nový Smokovec, Slovakia, during January 15-18, 2023. The 22 full papers presented together with 2 best papers and 2 best students papers in this book were carefully reviewed and selected from 43 submissions. This workshop focuses on graphs problems and optimization; graph drawing and visualization; NP-hardness and fixed parameter tractability; communication and temporal graphs; complexity and learning; and robots and strings. .