Order Preserving or Increasing Mappings Freedom or Incomparability Preserving Mappings
Đuro_R. Kurepa
One recalls the definitions of increasing, SI, (s.~2:0)
ASI(s.~3:0) mappings of ordered sets and introduces FP mappings
(s.~4:0). Main theorems 2:2, 2:2:7, 3:1, 3:5:1, 4:8 are established.