TY - JOUR AU - Lafuente-Rodriguez, Ramiro AU - McGovern, Warren Wm. TI - When ${\rm Min}(G)^{-1}$ has a clopen $\pi $-base JO - Mathematica Bohemica PY - 2021 SP - 69 EP - 89 VL - 146 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.2020.0114-18/ DO - 10.21136/MB.2020.0114-18 LA - en ID - 10_21136_MB_2020_0114_18 ER -