Here are some lecture notes on graph theory:

Introduction to Graph Theory: This lecture provides an overview of graph theory, including definitions of graphs, vertices, edges, and degrees. It also introduces basic graph properties such as connectedness, cycles, and paths.

Graph Representations: This lecture discusses different ways to represent graphs, including adjacency matrices and adjacency lists. It also covers the advantages and disadvantages of each representation.

Graph Traversals: This lecture focuses on graph traversal algorithms, such as depthfirst search (DFS) and breadthfirst search (BFS). It explains how these algorithms can be used to explore and analyze graphs.

Minimum Spanning Trees: This lecture introduces the concept of minimum spanning trees (MSTs) and discusses algorithms for finding them, such as Kruskalâ€™s algorithm and Primâ€™s algorithm.

Shortest Paths: This lecture covers algorithms for finding the shortest paths between vertices in a graph, including Dijkstraâ€™s algorithm and the BellmanFord algorithm. It also discusses applications of shortest path algorithms.

Planar Graphs: This lecture explores the properties of planar graphs, including Eulerâ€™s formula and the concept of planar embeddings. It also discusses algorithms for testing planarity and finding planar embeddings.

Coloring and Matching: This lecture introduces graph coloring and matching problems. It covers concepts such as chromatic number, vertex coloring, edge coloring, and maximum matching. It also discusses algorithms for solving these problems.

Network Flows: This lecture focuses on network flow problems, including the maximum flow problem and the minimum cut problem. It covers algorithms such as the FordFulkerson algorithm and the EdmondsKarp algorithm.

Graph Algorithms in Practice: This lecture discusses realworld applications of graph algorithms, such as social networks, transportation networks, and computer networks. It also covers optimization techniques and algorithmic complexity analysis.
These lecture notes provide a comprehensive introduction to graph theory and cover a wide range of topics and algorithms. They can serve as a useful resource for students studying graph theory or for anyone interested in learning more about this field.