An up-spectral space need not be $A$-spectral.

Echi, Othman, and Gargouri, Riyadh. "An up-spectral space need not be -spectral.." The New York Journal of Mathematics [electronic only] 10 (2004): 271-277. <http://eudml.org/doc/128231>.

@article{Echi2004,
author = {Echi, Othman, Gargouri, Riyadh},
journal = {The New York Journal of Mathematics [electronic only]},
keywords = {Alexandroff space; one-point compactification; sober space; spectral space},
language = {eng},
pages = {271-277},
publisher = {University at Albany, Deptartment of Mathematics and Statistics},
title = {An up-spectral space need not be -spectral.},
url = {http://eudml.org/doc/128231},
volume = {10},
year = {2004},
}

TY - JOUR
AU - Echi, Othman
AU - Gargouri, Riyadh
TI - An up-spectral space need not be -spectral.
JO - The New York Journal of Mathematics [electronic only]
PY - 2004
PB - University at Albany, Deptartment of Mathematics and Statistics
VL - 10
SP - 271
EP - 277
LA - eng
KW - Alexandroff space; one-point compactification; sober space; spectral space
UR - http://eudml.org/doc/128231
ER -