query: Is this (tricky) natural deduction with De Morgan's laws correct?
positive_passages.docid: 148239
positive_passages.text: natural deduction proof with De Morgan's laws
negative_passages.docid: 80183
negative_passages.text: Deduction of "Disjunction elimination"
negative_passages.docid: 104124
negative_passages.text: Prove or disprove: $A-(B-C) = (A-B)-C$
negative_passages.docid: 122184
negative_passages.text: De Morgan's laws in logic and set theory
negative_passages.docid: 151940
negative_passages.text: Cancellation law for direct sums
negative_passages.docid: 68880
negative_passages.text: propositional calculus problem, how to prove this right or wrong?
negative_passages.docid: 36503
negative_passages.text: Nicomachus theorem proof - what did I do wrong?
negative_passages.docid: 24478
negative_passages.text: What is the name of this theorem, and are there any caveats?
negative_passages.docid: 45666
negative_passages.text: de morgan law $A\setminus (B \cap C) = (A\setminus B) \cup (A\setminus C) $
negative_passages.docid: 85186
negative_passages.text: Basic demonstration concerning the natural logarithm...
negative_passages.docid: 116305
negative_passages.text: Proving DeMorgan's Theorem
negative_passages.docid: 53056
negative_passages.text: natural deduction: introduction of universal quantifier and elimination of existential quantifier explained
negative_passages.docid: 151038
negative_passages.text: How to prove (A v B), (A → C), (B → D) therefore (C v D)
negative_passages.docid: 63952
negative_passages.text: Disproving: If $(\Gamma\vdash(\phi\,\lor\psi))$, either $(\Gamma\vdash\phi)$ or $(\Gamma\vdash\psi)$ is true
negative_passages.docid: 50804
negative_passages.text: It seems obvious, but how to prove it formally?
negative_passages.docid: 65759
negative_passages.text: A possible incorrect application of Law of Large numbers
negative_passages.docid: 146033
negative_passages.text: Intuitive Proof of the Chain Rule in 1 Variable