PRODUCTS OF COCYCLES AND EXTENSIONS OF MAPPINGS

[1] On the connectivity ring of an abstract space [J]. ANNALS OF MATHEMATICS, 1936, 37 : 698 - 708

[2] Alexandroff P., 1935, TOPOLOGIE I

[3] Multiplications on a complex [J]. ANNALS OF MATHEMATICS, 1936, 37 : 681 - 697

[4] Cohomology and continuous mappings [J]. ANNALS OF MATHEMATICS, 1940, 41 : 231 - 251

[5] EILENBERG S, 1941, LECT TOPOLOGY, P57

[6] Freudenthal H, 1939, P K NED AKAD WETENSC, V42, P139

[7] FREUDENTHAL H, 1937, COMPOS MATH, V5, P299

[8] Hopf H., 1935, FUND MATH, V25, P427

[9] Hopf H., 1933, COMMENT MATH HELV, V5, P39

[10] HOPF H, 1939, MATH ANN, V104, P639

[1] On the connectivity ring of an abstract space [J]. ANNALS OF MATHEMATICS, 1936, 37 : 698 - 708

[2] Alexandroff P., 1935, TOPOLOGIE I

[3] Multiplications on a complex [J]. ANNALS OF MATHEMATICS, 1936, 37 : 681 - 697

[4] Cohomology and continuous mappings [J]. ANNALS OF MATHEMATICS, 1940, 41 : 231 - 251

[5] EILENBERG S, 1941, LECT TOPOLOGY, P57

[6] Freudenthal H, 1939, P K NED AKAD WETENSC, V42, P139

[7] FREUDENTHAL H, 1937, COMPOS MATH, V5, P299

[8] Hopf H., 1935, FUND MATH, V25, P427

[9] Hopf H., 1933, COMMENT MATH HELV, V5, P39

[10] HOPF H, 1939, MATH ANN, V104, P639