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數學 ⟩ 邏輯
🚧
命題╱statement:可斷定為「真」或「假」的敘述
述詞╱predicate:含有「變數」的命題
參考:KaTeX ⟩ Logic and Set Theory
∀ \forall
\forall
∁ \complement
\complement
∴ \therefore
\therefore
\emptyset
⊂ \subset
\subset
∵ \because
\because
\empty
∃ \exist
\exist
⊃ \supset
\supset
↦ \mapsto
\mapsto
\varnothing
∄ \nexists
\nexists
∣∣ \mid
\mid
→ \to
\to
⟹ \implies
\implies
∈ \in
\in
∧ \land
\land
← \gets
\gets
⟸ \impliedby
\impliedby
∨ \lor
\lor
↔ \leftrightarrow
\leftrightarrow
⟺ \iff
\iff
∉ \notin
\notin
∋ \ni
\ni
∌ \notni
\notni
¬ \neg or \lnot
\neg
\lnot
Direct Input: ∀∴∁∵∃∣∈∉∋⊂⊃∧∨↦→←↔¬∀∴∁∵∃∣∈∈/∋⊂⊃∧∨↦→←↔¬ ℂ ℍ ℕ ℙ ℚ ℝ
Brilliant ⟩ Predicate Logic
wiki ⟩ First-order logic (predicate logic)
中研院 ⟩ Predicate Logic (PDF)