Introducing chain homology/cochain cohomology and singular homology/singular cohomology:
Andrei Kolmogoroff, Über die Dualität im Aufbau der kombinatorischen Topologie, Recueil Mathématique 1(43) (1936), 97–102. (mathnet)
Andrei Kolmogoroff, Homologiering des Komplexes und des lokal-bicompakten Raumes, Recueil Mathématique 1(43) (1936), 701–705. mathnet.
Early alternative discussion of the definition of algorithm:
A. N. Kolmogorov, V. A. Uspénski: On the definition of an algorithm, American Mathematical Society Translations, Series II 29 (1963) 217–245
original in: Uspehi Mat. Nauk. 13 (1958) 3–28 [math-net.ru]
JSL review by Elliott Mendelson: jstor:2272011.
See also:
Last revised on September 26, 2026 at 16:04:53. See the history of this page for a list of all contributions to it.