2 citations · 4 across the 3 of their papers we have counts for
3 papers
math.FA2005
On the intrinsic and the spatial numerical range
Miguel Martin, Javier Meri, Rafael Paya
For a bounded function from the unit sphere of a closed subspace of a Banach space , we study when the closed convex hull of its spatial numerical range is equal…
math.FA2004★ 2 cited
The Alternative Daugavet Property of -algebras and -triples
Miguel Martin
A Banach space is said to have the alternative Daugavet property if for every (bounded and linear) rank-one operator there exists a modulus one scalar $ω…
math.FA2004★ 2 cited
The Daugavet property of -algebras, -triples, and of their isometric preduals
Julio Becerra-Guerrero, Miguel Martin
A Banach space is said to have the Daugavet property if every rank-one operator satisfies . We give geometric characterizations o…