\input zb-basic \input zb-ioport \iteman{io-port 06091236} \itemau{Qin, Xuecheng; Liu, Chunhui} \itemti{Interval-valued fuzzy subalgebras of lattice implication algebras.} \itemso{Pure Appl. Math. 27, No. 6, 801-807 (2011).} \itemab Summary: In this paper, we apply the concept of interval valued fuzzy sets to lattice implication algebras, introduce the notion of interval valued fuzzy lattice implication subalgebras and discuss their properties. The relations between interval valued fuzzy lattice implication subalgebras and (fuzzy) lattice implication subalgebras are discussed. The images and inverse images of interval valued fuzzy sets are defined, and the conditions for the images and inverse images of interval valued fuzzy lattice implication subalgebras to be interval valued fuzzy lattice implication subalgebras are obtained. \itemrv{~} \itemcc{} \itemut{fuzzy logic; interval valued fuzzy sets; lattice implication algebras; interval valued fuzzy lattice implication subalgebras} \itemli{} \end