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math.GN2019
Closeness and linkness in balleans
Igor Protasov, Ksenia Protasova
A set endowed with a coarse structure is called ballean or coarse space. For a ballean , we say that two subsets , of are close (linked) if there e…
math.GN2019
A note on free vector balleans
Igor Protasov, Ksenia Protasova
A vector balleans is a vector space over endowed with a coarse structure in such a way that the vector operations are coarse mappings. We prove that, for every ballean…