%0 Journal Article %T A variant of K-theory and topological T-duality for Real circle bundles %A Kiyonori Gomi %J Mathematics %D 2013 %I arXiv %R 10.1007/s00220-014-2153-3 %X For a space with involutive action, there is a variant of K-theory. Motivated by T-duality in type II orbifold string theory, we establish that a twisted version of the variant enjoys a topological T-duality for Real circle bundles, i.e. circle bundles with real structure. %U http://arxiv.org/abs/1310.8446v1