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

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)

pagename?
logical constant : not in kms... https://www.kms.or.kr/mathdict/list.html?key=ename&keyword=logical con

logical.constant
logical.constant