Geodesic
Some 2-point sets
James H. Schmerl1
1 Department of Mathematics University of Connecticut Storrs, CT 06269-9003, U.S.A.
Fundamenta Mathematicae, Tome 208 (2010) no. 1, pp. 87-91

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

Chad, Knight Suabedissen [Fund. Math. 203 (2009)] recently proved, assuming CH, that there is a $2$-point set included in the union of countably many concentric circles. This result is obtained here without any additional set-theoretic hypotheses.
DOI : 10.4064/fm208-1-6
Keywords: chad knight amp suabedissen fund math recently proved assuming there point set included union countably many concentric circles result obtained here without additional set theoretic hypotheses

James H. Schmerl 1

1 Department of Mathematics University of Connecticut Storrs, CT 06269-9003, U.S.A. 
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James H. Schmerl. Some 2-point sets. Fundamenta Mathematicae, Tome 208 (2010) no. 1, pp. 87-91. doi: 10.4064/fm208-1-6

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