×

On a problem in map colouring. (English) Zbl 0187.21001


Keywords:

topology

References:

[1] Красносєльский М. А., Крєйн С. Г.: O6 одном классє мєорєм єдунсмєєнносму для уравнєнуя \(y' = f(x, y)\). Ycnexn matem, наук 11 (1965), 209-213.
[2] Brooks R. L.: On coloring the nodes of a network. Proc. Cambridge Philos. Soc. 37 (1941), 194-197. · Zbl 0027.26403
[3] Ringel G.: Färbungsprobleme auf Flächen und Graphen. VEB Deutscher Verlag der Wissenschaften, Berlin 1959. · Zbl 0088.39601
[4] Palczewski B.: On the uniqueness of solutions and the convergence of successive approximations in the Darboux problem under the conditions of the Krasnosielski and Krein type. Ann. Polon. Math. 14 (1964), 183-190. · Zbl 0132.07301
[5] Ringel G.: Ein Sechsfarbenproblem auf der Kugel. Abhandl. math. Semin. Univ. Hamburg 29 (1965), 107-117. · Zbl 0132.20701 · doi:10.1007/BF02996313
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.