Homology operations and loop spaces

On the Homotopy Groups of the Union of Spheres

P. J. Hilton · Journal of the London Mathematical Society · 1955 · 266 citations

Natural Sciences, Mathematics, Topology +8

On the Pontryagin product in spaces of paths

R. Bott, Hans Samelson · Commentarii Mathematici Helvetici · 1953 · 117 citations

Natural Sciences, Mathematics, Topology +6

A proof of the comparison theorem for spectral sequences

E. C. Zeeman · Mathematical Proceedings of the Cambridge Philosophical Society · 1957 · 61 citations

Natural Sciences, Mathematics, Dynamical Systems +10

Cohomology operations derived from the symmetric group

Norman Steenrod · Commentarii Mathematici Helvetici · 1956 · 27 citations

Natural Sciences, Mathematics, Algebra +12