∀
LaTeX에선 \forall : $\displaystyle \forall$
이름이 관련: 전칭명제
Universal_quantifier
https://mathworld.wolfram.com/UniversalQuantifier.html
https://ncatlab.org/nlab/show/universal quantifier
https://mathworld.wolfram.com/UniversalQuantifier.html
https://ncatlab.org/nlab/show/universal quantifier