Properties of functions with monotone graphs
  A metric space (X,d) is monotone if there is a linear order < on X and a constant c>0 such that d(x,y) < c d(x,z) for all x<y<z in X. Properties of continuous functions with monotone graph (considered as a planar set) are investigated. It is shown, e.g., that such a function can be almost nowhere differentiable, but must be differentiable at a dense set, and that Hausdorff dimension of the graph of such a function is 1. 
Ond\v{r}ej Zindulka, Michael Hru\v{s}\'ak, Tam\'as M\'atrai, Ale\v{s}   Nekvinda, V\'aclav Vlas\'ak
math.CA