12:2612:26, 21 September 2020diffhist+1
Three mountain problem
correct spelling demands for a change of "three mountain" into te plural three mountains. This should also be changed in the title of this lemma/article, but being a non-English visitor here I do not dare to do that myself. Dolph Kohnstamm Prof.Emeritus of Leyden University (Neth)
12:2612:26, 21 September 2020diffhist+1
Three mountain problem
correct spelling demands for a change of "three mountain" into te plural three mountains. This should also be changed in the title of this lemma/article, but being a non-English visitor here I do not dare to do that myself. Dolph Kohnstamm Prof.Emeritus of Leyden University (Neth)