What is the convention for multi-input XNOR gates?

[Bartholomew]

Just what is a multi-input XNOR? So far I have not been able to find any online resources for this question. There are two possibilities: it's either just like a multi-input XOR, only followed by a NOT, or it goes like A XNOR B XNOR C. Does anyone know the convention?

 

[misogynisticfeminist]

lol, i didn't know that there was a branch in philosophy dealing with logic gates...: P

the mods should move this..