AN EXTENSION THEOREM FOR MAPPINGS INTO SIMPLY CONNECTED SPACES

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

[2] DETERMINATION OF THE 2ND HOMOLOGY AND COHOMOLOGY GROUPS OF A SPACE BY MEANS OF HOMOTOPY INVARIANTS [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1946, 32 (11) : 277 - 280

[3] RELATIONS BETWEEN HOMOLOGY AND HOMOTOPY GROUPS OF SPACES [J]. ANNALS OF MATHEMATICS, 1945, 46 (03) : 480 - 509

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

[5] Mapping of three dimensional spheres on spheric surphaces [J]. MATHEMATISCHE ANNALEN, 1931, 104 : 637 - 665

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

[7] Hurewicz W, 1936, P K AKAD WET-AMSTERD, V39, P117

[8] Pontrjagin L, 1942, CR ACAD SCI URSS, V34, P35

[9] Pontrjagin L., 1941, REC MATH MAT SBORNIK, V9, P331

[10] Robbins H, 1941, T AM MATH SOC, V49, P308

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

[2] DETERMINATION OF THE 2ND HOMOLOGY AND COHOMOLOGY GROUPS OF A SPACE BY MEANS OF HOMOTOPY INVARIANTS [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1946, 32 (11) : 277 - 280

[3] RELATIONS BETWEEN HOMOLOGY AND HOMOTOPY GROUPS OF SPACES [J]. ANNALS OF MATHEMATICS, 1945, 46 (03) : 480 - 509

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

[5] Mapping of three dimensional spheres on spheric surphaces [J]. MATHEMATISCHE ANNALEN, 1931, 104 : 637 - 665

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

[7] Hurewicz W, 1936, P K AKAD WET-AMSTERD, V39, P117

[8] Pontrjagin L, 1942, CR ACAD SCI URSS, V34, P35

[9] Pontrjagin L., 1941, REC MATH MAT SBORNIK, V9, P331

[10] Robbins H, 1941, T AM MATH SOC, V49, P308