Subdirect decompositions of the lattice of varieties of completely regular semigroups
1989 ◽
Vol 39
(3)
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pp. 343-351
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Keyword(s):
It is shown that if V is an element of the lattice of the title then the map given by U → (V ∧ U, V ∨ U) is a complete lattice embedding of into (V] × [V) if and only if V is a join-infinitely distributive element. In this case the image of the map is a subdirect product of the principal ideal (V] by the principal filter [V) generated by V. Some important varieties in are shown to be join-infinitely distributive.
1983 ◽
Vol 35
(2)
◽
pp. 227-235
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2013 ◽
Vol 42
(4)
◽
pp. 1397-1413
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2016 ◽
Vol 45
(7)
◽
pp. 2783-2794
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1985 ◽
Vol 38
(3)
◽
pp. 372-393
◽
2007 ◽
Vol 83
(1)
◽
pp. 87-104
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1990 ◽
Vol 32
(2)
◽
pp. 137-152
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2015 ◽
Vol 43
(10)
◽
pp. 4080-4096
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2019 ◽
Vol 29
(08)
◽
pp. 1383-1407
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