Protasov, I.; Protasova, K.
(ДЗ "ЛНУ імені Тараса Шевченка", 2019)
A vector balleans is a vector space over R en-
dowed with a coarse structure in such a way that the vector opera-
tions are coarse mappings. We prove that, for every ballean (X, E),
there exists the unique free vector ...