Logical Constant

Some symbols that are commonly treated as logical constants are:

Symbol	Corresponding English
$\lnot$	"not"
$\land$	"and"
$\lor$	"or"
$ightarrow$	"implies", "if...then"
$orall$	"for all"
$\exists$	"there exists", "for some"
$=$	"equals"
$\Box$	"necessary"
$\Diamond$	"possible"

One of the fundamental questions in the Philosophy Of Logic is "What is a logical constant?"; that is, what special feature of certain Constant s that makes them ''logical'' in nature?

EXTERNAL LINKS

Stanford Encyclopedia of Philosophy entry on logical constants

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	CATEGORIES ABOUT LOGICAL CONSTANT

	logic

Information About

Logical Constant