Deprecated: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 135] in /var/www/html/w/includes/Debug/MWDebug.php on line 372
The largest proper congruence on S(X) - MaRDI portal

The largest proper congruence on S(X) (Q1066505)

From MaRDI portal





scientific article; zbMATH DE number 3925787
Language Label Description Also known as
English
The largest proper congruence on S(X)
scientific article; zbMATH DE number 3925787

    Statements

    The largest proper congruence on S(X) (English)
    0 references
    1984
    0 references
    For certain spaces, including absolute retracts, the largest proper congruence on the semigroup of continuous selfmaps is characterized. Roughly, two maps are related iff for each subset A of a certain type, either the maps agree on A or both fail to be injective on A.
    0 references
    largest proper congruence
    0 references
    semigroup of continuous selfmaps
    0 references

    Identifiers