9 citations · 48 across the 15 of their papers we have counts for
4 papers · 1 filter
The fixed point property in direct sums and modulus R(a,X)
Andrzej Wiśnicki
We show that the direct sum of Banach spaces with a strictly monotone norm has the weak fixed point property for nonexpansive mappings whenever for…
On the Suzuki nonexpansive-type mappings
Anna Betiuk-Pilarska, Andrzej Wiśnicki
It is shown that if is a nonempty convex and weakly compact subset of a Banach space with and satisfies condition or is continuous and sat…
The super fixed point property for asymptotically nonexpansive mappings
Andrzej Wiśnicki
We show that the super fixed point property for nonexpansive mappings and for asymptotically nonexpansive mappings in the intermediate sense are equivalent. As a consequence, we ob…
On the structure of fixed-point sets of asymptotically regular semigroups
Andrzej Wiśnicki
We extend a few recent results of Górnicki (2011) asserting that the set of fixed points of an asymptotically regular mapping is a retract of its domain. In particular, we prove th…