r -homeomorphisms and *r -homeomorphisms
English

M.J. Jeyanthi, S. Pious Missier, P. Thangavelu
2011 Journal of Mathematical Sciences & Computer Applications  
In this paper, the concepts of Λr-homeomorphisms and Λr * -homeomorphisms are introduced and their basic properties are investigated. In particular, it has been shown that Λr * -homeomorphisms form a group under composition.
doi:10.5147/jmsca.2011.0039 fatcat:6lzdywirefa7tg5kgv5dnw6wtu