All my papers by field


Finite graph minors

Infinite graph minors

Topological aspects of infinite graphs

Growth in infinite graphs

Normal spanning trees

Ends of graphs

Erdös-Menger conjecture; paths in infinite graphs

Algebraic graph theory

Extremal graph theory

Planar graphs and graphs in surfaces

Simplicial decompositions of graphs

Universal graphs


Infinite combinatorics, orders and logic


Applications outside mathematics

Technical note:

My DVI files do not contain figures. For this reason, I try to post papers that include figures in PDF. Thus, papers posted in DVI either contain no figures or are too old for proper conversion into PDF. In some such (pre-1995) cases I managed to produce PDF files with partial figures, which are also posted above.