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
Set-valued mappings on metric spaces - MaRDI portal

Set-valued mappings on metric spaces (Q5905398)

From MaRDI portal
scientific article; zbMATH DE number 13340
Language Label Description Also known as
English
Set-valued mappings on metric spaces
scientific article; zbMATH DE number 13340

    Statements

    Set-valued mappings on metric spaces (English)
    0 references
    0 references
    25 June 1992
    0 references
    The author gives some metrical fixed point theorems for multivalued mappings. Reviewer's remark: The condition \(\delta(T(x),T(y))\leq K(d(x,y))\), \(K(0)=0\), for all \(x,y\in X\), which appears in the Theorems 2, 3, and 4, implies that \(T(x)=\{x\}\), for all \(x\in X\).
    0 references
    0 references

    Identifiers