The Quarterly Journal of Mathematics · 1971 · 96 citations · 0 references
Natural SciencesMathematicsGeometrySet TheoryTopologyHomotopy TheorySet-theoretic Topology
C. P. ROURKE, B. J. SANDERSON; Δ-SETS I: HOMOTOPY THEORY, The Quarterly Journal of Mathematics, Volume 22, Issue 3, 1 September 1971, Pages 321–338, https: