The general theory of varieties and their duality theorems

[1] ALEXANDROFF P, 1929, VERHANDELINGEN AKAD

[2] Demonstration of the invariance of closed curves [J]. MATHEMATISCHE ANNALEN, 1912, 72 : 422 - 425

[3] LEFSCHETZ M, 1930, TOPOLOGY AM MATH SOC, V12

[4] LEFSCHETZ M, UNPUB AM J MATH

[5] LEFSCHETZ MM, 1930, P NAT ACAD SCI, V16, P530

[6] LEFSCHETZ MM, 1931, ANN MATH, V32, P393

[7] LEFSCHETZ MM, 1931, ANN MATH, V32, P539

[8] LEFSCHETZ S, TOPOLOGY, P142

[9] LEFSCHETZ S, TOPOLOGY, P314

[10] LEFSCHETZ S, TOPOLOGY, P149

[1] ALEXANDROFF P, 1929, VERHANDELINGEN AKAD

[2] Demonstration of the invariance of closed curves [J]. MATHEMATISCHE ANNALEN, 1912, 72 : 422 - 425

[3] LEFSCHETZ M, 1930, TOPOLOGY AM MATH SOC, V12

[4] LEFSCHETZ M, UNPUB AM J MATH

[5] LEFSCHETZ MM, 1930, P NAT ACAD SCI, V16, P530

[6] LEFSCHETZ MM, 1931, ANN MATH, V32, P393

[7] LEFSCHETZ MM, 1931, ANN MATH, V32, P539

[8] LEFSCHETZ S, TOPOLOGY, P142

[9] LEFSCHETZ S, TOPOLOGY, P314

[10] LEFSCHETZ S, TOPOLOGY, P149