inspired by the work of suzuki in [t. suzuki, a generalized banach contraction principle that characterizes metric completeness, proc. amer. math. soc. 136 (2008), 1861--1869], we prove a fixed point theorem for contractive mappings that generalizes a theorem of geraghty in [m.a. geraghty, on contractive mappings, proc. amer. math. soc., 40 (1973), 604--608]an...