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Kritische Sehnen auf Riemannschen Elementarraumstücken. (German) Zbl 0113.15204


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[1] Alexandroff, P.: On homological situation properties of complexes and closed sets. Trans. Am. Math. Soc.54, 286-339 (1943). · Zbl 0060.40806 · doi:10.1090/S0002-9947-1943-0008700-1
[2] ??, u.H. Hopf: Topologie I. Berlin: Verlag Julius Springer 1935.
[3] Borsuk, K.: Über eine Klasse von lokal zusammenhängenden Räumen. Fund. Math.19, 220-242 (1922). · JFM 58.0629.02
[4] Elsholz, L.: Die Länge einer Mannigfaltigkeit und ihre Eigenschaften. Mat. Sbornik N. S.5 (47) 565-571 (1939). · Zbl 0022.41102
[5] Lefschetz, S.: Topology. Americ. Math. Society New York 1930. · JFM 56.0491.08
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[7] Lusternik, L., etL. Schnirelmann: Méthodes topologiques dans les problèmes variationnels. Paris 1934. · Zbl 0011.02803
[8] Morse, M.: The calculus of variations in the large. Americ. Math.Society New York 1934. · Zbl 0011.02802
[9] Seifert, H.: Periodische Bewegungen mechanischer Systeme. Math. Z.51, 197-216 (1949). · Zbl 0030.22103 · doi:10.1007/BF01291002
[10] ??, u.W. Threlfall: Lehrbuch der Topologie. Leipzig u. Berlin: B. G. Teubner-Verlag 1934.
[11] ?? ?? Variationsrechnung im Großen. Leipzig u. Berlin: B. G. Teubner-Verlag 1934.
[12] Whitney, H.: Differentiable manifolds. Ann. Math. (2)37, 645-680 (1936). · JFM 62.1454.01 · doi:10.2307/1968482
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