Geodesic
A Minimal Regular Space that is Not Strongly Minimal Regular
Canadian journal of mathematics, Tome 28 (1976) no. 4, pp. 875-878

Voir la notice de l'article provenant de la source Cambridge University Press

A regular T 1 space is said to be R-closed if there is no regular T 1 space in which it can be embedded as a nonclosed subspace. A regular T 1 space is said to be minimal regular if no regular T1 topology on the underlying set is strictly weaker than the given topology. It is known (see [1, Theorem 4, p. 455]) that every minimal regular space is R-closed. An R-closed space, however, need not be minimal regular [3, Example 2, p. 288]. 
Pettey, Dix H. A Minimal Regular Space that is Not Strongly Minimal Regular. Canadian journal of mathematics, Tome 28 (1976) no. 4, pp. 875-878. doi: 10.4153/CJM-1976-083-5
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