We prove that if X is an infinite-dimensional Banach space with smooth partitions of unity then X and X∖ K are diffeomorphic for every weakly compact set K ⊂ X.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-sm162-3-4,
author = {Daniel Azagra and Alejandro Montesinos},
title = {On diffeomorphisms deleting weak compacta in Banach spaces},
journal = {Studia Mathematica},
volume = {162},
year = {2004},
pages = {229-244},
zbl = {1059.46057},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm162-3-4}
}
Daniel Azagra; Alejandro Montesinos. On diffeomorphisms deleting weak compacta in Banach spaces. Studia Mathematica, Tome 162 (2004) pp. 229-244. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm162-3-4/