Unified multi-tupled fixed point theorems involving monotone property in   ordered metric spaces
  In this paper, we introduce a generalized notion of monotone property and prove some results regarding existence and uniqueness of multi-tupled fixed points for nonlinear contraction mappings satisfying monotone property in ordered complete metric spaces. Our results unify several classical and well known n-tupled (including coupled, tripled and quadruple ones) fixed point results existing in literature. 
Aftab Alam, Mohammad Imdad and Stojan Radenovic
math.FA