Infinite graphs with ends: a topological approach

All Hamburg papers on this topic

The original topological approach group in 2007

Introductory:

The best starting point is perhaps the introductory but comprehensive survey

• Locally finite graphs with ends: a topological approach I–III (R. Diestel), Discrete Math 311–312 (2010–11); PDF of parts I–II

• Chapter 8.5 of my book, 4th edition (2010).

While the survey is more comprehensive (and includes many pointers to what might be interesting to look at next, including countless open problems), it is also written in a less formal style that makes slightly more demands on the reader. The book chapter may help with precise definitions, should the survey be found to be too informal. It also offers a selection of proofs of basic facts, which are typical for this area and make good introductory reading. There is also an older expository text, mostly written around 2002:

• The cycle space of an infinite graph (R. Diestel), Comb. Probab. Computing 14 (2005), 59-79; PDF

The first few sections of this contain a lot of motivation for the topological concepts used in this field, and still have some entertainment value.

General properties of the topological space formed by a graph and its ends:

• Dual trees must share their ends (R. Diestel & J. Pott), preprint 2011; PDF
  
• Graph topologies induced by edge lengths (A. Georgakopoulos), preprint 2009; PDF.
  
• The fundamental group of a locally finite graph with ends (R. Diestel & P. Sprüssel), Advances Math. 226 (2011), 2643-2675; abstract; PDF.
• End spaces of graphs are normal (P. Sprüssel), J. Combin. Theory (Series B), 98 (2008), 798-804; PDF.
• Duality of ends (H. Bruhn & M. Stein), Combinatorics, Probability and Computing, 12 (2009), 47-60; PDF.
  
• End spaces and spanning trees (R. Diestel), J. Combin. Theory (Series B) 96 (2006), 846-854; abstract; DVI; PDF
• Connected but not path-connected subspaces of infinite graphs (A. Georgakopoulos), Combinatorica 27 No.6 (2007), 683-698; PDF.
• Graph-theoretical versus topological ends of graphs (R. Diestel & D. Kühn), J. Combin. Theory (Series B) 87 (2003), 197-206; abstract; PDF

Homology / Cycle space:

• Cycle decompositions: from graphs to continua (A. Georgakopoulos), preprint 2010, ArXiv
  
• On the homology of locally compact spaces with ends (R. Diestel & P. Sprüssel), Topology and its Applications (2011), to appear; PDF
  
• Eulerian edge sets in locally finite graphs (E. Berger & H. Bruhn), to appear in Combinatorica; PDF
  
• Topological circles and Euler tours in locally finite graphs (A. Georgakopoulos), Electronic J. Comb., 16:#R40 (2009); PDF
  
• Bicycles and left-right tours in locally finite graphs (H. Bruhn, S. Kosuch & M. Win Myint), Europ. J. Combinatorics 30 (2009), 356-371; PDF.
  
• The homology of locally finite graphs with ends (R. Diestel & P. Sprüssel), Combinatorica 30 (2010), 681-714; abstract; journal version; extended version
  
• Bases and closed spaces with infinite sums (H. Bruhn & A. Georgakopoulos), Linear Algebra and its Applications (2011), to appear; PDF
• Geodetic topological cycles in locally finite graphs (A. Georgakopoulos & P. Sprüssel),  Electronic J. Comb., 16:#R144 (2009); PDF
• Duality in infinite graphs (H. Bruhn & R. Diestel), Comb. Probab. Computing 15 (2006), 75-90; abstract; PDF
• On end degrees and infinite cycles in locally finite graphs (H. Bruhn & M. Stein), Combinatorica 27 (2007), 269-291; PDF
• MacLane's planarity criterion for locally finite graphs (H. Bruhn & M. Stein), J. Combin. Theory (Series B) 96 (2006), 225-239; PDF.
• Der Zyklenraum nicht lokal-endlicher Graphen (M. Schulz), Diplomarbeit Hamburg 2005, PDF.
• Cycle-cocycle partitions and faithful cycle covers for locally finite graphs (H. Bruhn, R. Diestel & M. Stein), J. Graph Theory 50 (2005), 150-161; abstract; PDF
• Topological paths, cycles and spanning trees in infinite graphs (R. Diestel & D. Kühn), Europ. J. Combinatorics 25 (2004), 835-862; abstract; PDF
• The cycle space of a 3-connected locally finite graph is generated by its finite and infinite peripheral circuits (H. Bruhn), JCTB 92 (2004), 235-256; PDF.
• On infinite cycles I (R. Diestel & D. Kühn), Combinatorica 24 (2004), 68-89; abstract; PDF
• On infinite cycles II (R. Diestel & D. Kühn), Combinatorica 24 (2004), 91-116; abstract; PDF

Extremal infinite graph theory:

• Forcing finite minors in sparse infinite graphs by large-degree assumptions (R. Diestel), preprint 2012; PDF
  
• Extremal infinite graph theory (survey) (M. Stein), to appear in the Infinite Graph Theory special volume of Discrete Math (2011); PDF
  
• Ends and vertices of small degree in infinite minimally k-(edge-)connected graphs (M. Stein), preprint 2009; PDF
  
• Infinite Hamilton cycles in squares of locally finite graphs (A. Georgakopoulos), Advances Math., 220 (2009), 670-705; PDF
• Forcing highly connected subgraphs in locally finite graphs (M. Stein), J. Graph Theory 54 (2007), 331-349; PDF
• Arboriticity and tree-packing in locally finite graphs (M. Stein), J. Combin. Theory (Series B) 96 (2006), 302-312; PDF.
• Hamilton cycles in planar locally finite graphs (H. Bruhn & X. Yu), SIAM. J. Discrete Math. 22 (2008), 1381-1392; PDF

Infinite matroids

Graphs and groups

Infinite electrical networks and flows

Menger's theorem for infinite graphs with ends

Some theses in this area:

• The line graph of every locally finite 6-edge-connected graph with finitely many ends is hamiltonian, (F. Lehner, Masterarbeit 2011)
  
• Infinite graphs with a tree-like structure, (M. Hamann, 2011)
  
• Gruppenwertige Flüsse (T. Rühmann, Bachelorarbeit 2010)
  
• On the homology of infinite graphs with ends (P. Sprüssel, 2010)
• Extremal questions in graph theory (M. Stein, Habilitationsschrift 2009)
• Graphs and their circuits: from finite to infinite (H. Bruhn, Habilitationsschrift 2009)
• Bicycles and left-right tours in locally finite graphs (M. Win Myint, 2009)
• Topological paths and cycles in infinite graphs (A. Georgakopoulos, 2007)
• Der Zyklenraum nicht lokal-endlicher Graphen (M. Schulz, Diplomarbeit 2005)
• Ends of graphs (M. Stein, 2005)
• Infinite circuits in locally finite graphs (H. Bruhn, 2005)
• Infinite highly connected planar graphs of large girth (A.Georgakopoulos, Diplomarbeit 2004)
  
• Cycles, minors and trees (D. Kühn, 2001)
  

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