Full Idea
Reflexive relations are, and non-reflexive relations may be, monadic in the ontological sense although they are syntactically polyadic.
Gist of Idea
Reflexive relations are syntactically polyadic but ontologically monadic
Source
George Molnar (Powers [1998], 1.4.5)
Book Reference
Molnar,George: 'Powers: a study in metaphysics', ed/tr. Mumford,Stephen [OUP 2003], p.42
A Reaction
I find this a very helpful distinction, as I have never quite understood reflexive relations as 'relations', even in the most obvious cases, such as self-love or self-slaughter.