논리상수,logical_constant

Difference between r1.4 and the current

@@ -19,8 +19,10 @@
QQQ 쌍조건문 logical_biconnective

----
WpEn:Logical_constant
= https://en.wikipedia.org/wiki/Logical_constant
[[WpEn:Logical_constant]]
= https://en.wikipedia.org/wiki/Logical_constant 
 
https://plato.stanford.edu/entries/logical-constants/

Up: [[논리,logic]]/[[논리학,logic]] [[상수,constant]] symbol([[기호,symbol]] [[심벌,symbol]])



wpen

언어,language $\displaystyle \mathcal{L}$논리상수는, 모든 해석,interpretation에서 같은 의미값,semantic_value을 갖는 기호,symbol.(or 심벌,symbol)
'''논리상수''의 두 중요한 타입은 논리연결사,logical_connective한정기호_정량자_quantifier가 있다.

몇 가지 예:
T "true"
F "false"
¬ "not"
∧ "and"
∨ "or"
→ "implies", "if...then"
∀ "for all"
∃ "there exists", "for some"
= "equals"

QQQ 쌍조건문 logical_biconnective