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2002

2002

Recently geometric independent component analysis (ICA) has been generalized to overcomplete cases (overcomplete geoICA) with… Expand

1997

1997

We are concerned with the question of whether a noncompact space with a nice local structure contains a ray, i.e.,a closed… Expand

1997

1997

It is shown that in Banach spaces with the property (M) of Kalton, nonexpansive self mappings of nonempty weakly compact convex… Expand

1993

1993

Let X1 and X2 be Banach spaces, and let X1 x X2 be equipped with the 11 -norm. If the first space X1 is uniformly convex in every… Expand

1985

1985

We show that the fixed point property is comparability invariant for finite ordered sets; that is, if P and Q are finite ordered… Expand

Highly Cited

1981

Highly Cited

1981

In this note we give an example of a weakly compact convex subset of LJ[O, 11 that fails to have the fixed point property for… Expand

Highly Cited

1979

Highly Cited

1979

We exhibit a con- struction of the LFP, generalizing the Knaster-Tarski formula lub(F”(O)},,, : lubs are substituted by well… Expand

Highly Cited

1973

Highly Cited

1973

Let C be a closed convex subset of the Banach space X. A subset F of C is called a nonexpansive retract of C if either F = 0 or… Expand

Highly Cited

1972

Highly Cited

1972

ABSTRACT. Given a bounded sequence {un: n = 1,2,...} of points in a closed convex subset C of a uniformly convex Banach space, cm… Expand

Highly Cited

1959

Highly Cited

1959

In this note relations between the fixed point property and compactness are studied and it is shown that the fixed point property… Expand