Combinatorial homotopy. II

[1]  H. Hopf,et al.  Über die Abbildungen der dreidimensionalen Sphäre auf die Kugelfläche , 1931 .

[2]  Heinz Hopf.  Über die Abbildungen der dreidimensionalen Sphäre auf die Kugelfläche , 1931 .

[3]  H. Seifert,et al.  Lehrbuch der Topologie , 1934 .

[4]  H. Freudenthal,et al.  Über die Klassen der Sphärenabbildungen I. Große Dimensionen , 1938 .

[5]  J. Whitehead.  Simplicial Spaces, Nuclei and m‐Groups , 1939 .

[6]  Samuel Eilenberg,et al.  On the relation between the fundamental group on a space and the higher homotopy groups , 1939 .

[7]  J. Whitehead,et al.  On Adding Relations to Homotopy Groups , 1941 .

[8]  N. Steenrod,et al.  Homotopy Relations in Fibre Spaces. , 1941, Proceedings of the National Academy of Sciences of the United States of America.

[9]  Michael Ginsburg.  ON THE LUSTERNIK-SCHNIRELMANN CATEGORY , 1941 .

[10]  H. Hopf.  Fundamentalgruppe und zweite Bettische Gruppe , 1941 .

[11]  J. Whitehead,et al.  On Incidence Matrices, Nuclei and Homotopy Types , 1941 .

[12]  Saunders MacLane,et al.  Group Extensions and Homology , 1942 .

[13]  R. Fox.  On Homotopy Type and Deformation Retracts , 1943 .

[14]  C. Ehresmann.  Sur les applications continues d'un espace dans un espace fibré ou dans un revêtement , 1944 .

[15]  H. Hopf.  Beiträge zur Homotopietheorie , 1944 .

[16]  J. Whitehead.  On the Groups πr(Vn,m) and Sphere‐Bundles , 1945 .

[17]  C. Chevalley.  Theory of Lie Groups , 1946 .

[18]  N. Steenrod,et al.  Products of Cocycles and Extensions of Mappings , 1947 .

[19]  S. Maclane,et al.  Homology of spaces with operators. II , 1947 .

[20]  Saunders MacLane,et al.  Cohomology Theory in Abstract Groups. II: Group Extensions with a non-Abelian Kernel , 1947 .

[21]  J. Whitehead.  Note on a theorem due to Borsuk , 1948 .

[22]  J. Whitehead.  On the homotopy type of ANR's , 1948 .

[23]  A. Blakers.  Some Relations Between Homology and Homotopy Groups , 1948 .

[24]  R. Fox.  Homotopy Groups and Torus Homotopy Groups , 1948 .

[25]  J. Whitehead.  On simply connected, 4-dimensional polyhedra , 1949 .