Title:

A note on principal ideals and $\Cal J$classes in the direct product of two semigroups (English) 
Author:

Fabrici, Imrich 
Language:

English 
Journal:

Czechoslovak Mathematical Journal 
ISSN:

00114642 (print) 
ISSN:

15729141 (online) 
Volume:

50 
Issue:

1 
Year:

2000 
Pages:

9198 
. 
Category:

math 
. 
MSC:

20M12 
idZBL:

Zbl 1038.20043 
idMR:

MR1745463 
. 
Date available:

20090924T10:30:29Z 
Last updated:

20200703 
Stable URL:

http://hdl.handle.net/10338.dmlcz/127552 
. 
Reference:

[1] Clifford A.H., Preston G.B.: The Algebraic Theory of Semigroups.Amer. Math. Soc., Providence I (1961). MR 0132791 
Reference:

[2] Fabrici I.: Principal twosided ideals in the direct product of two semigroups.Czechoslovak Math. J. 41 (1991), 411–421. Zbl 0751.20043, MR 1117794 
Reference:

[3] Fabrici I.: $\mathcal J$classes in the direct product of two semigroups.Czechoslovak Math. J. 44 (1994), 325–335. MR 1281027 
Reference:

[4] Fabrici I.: Onesided principal ideals in the direct product of two semigroups.Math. Bohem. 4 (1993), 337–342. Zbl 0810.20043, MR 1251880 
Reference:

[5] Tamura T.: Note on finite semigroups and determination of semigroups of order 4.J. Gakugei, Tokushima Univ. 5 (1954), 17–28. MR 0069813 
. 