poseticDataAnalysis (version 1.0.0)

IsIncomparableWith: Checking incomparability between two elements of a poset.

Description

Checks whether two elements \(a\) and \(b\) of \(V\) are incomparable, in the input poset \((V,\leq)\).

Usage

IsIncomparableWith(poset, element1, element2)

Value

A boolean value.

Arguments

poset

An object of S4 class POSet. Argument poset must be created by using any function contained in the package aimed at building object of S4 class POSet (e.g. POSet(), LinearPOSet(), ProductPOSet(), ...) .

element1

A character string (the name of a poset element).

element2

A character string (the name of a poset element).

Examples

elems <- c("a", "b", "c", "d")

dom <- matrix(c(
  "a", "b",
  "c", "b",
  "b", "d"
), ncol = 2, byrow = TRUE)

pos <- POSet(elements = elems, dom = dom)

chk <- IsIncomparableWith(pos, "a", "d")