query: Need help with Associative proof
positive_passages.docid: 33233
positive_passages.text: Need to prove that $(S,\cdot)$ defined by the binary operation $a\cdot b = a+b+ab$ is an abelian group on $S = \Bbb R \setminus \{-1\}$.
negative_passages.docid: 35168
negative_passages.text: How to use combinatorial proof instead of induction?
negative_passages.docid: 30136
negative_passages.text: Proof that a Combination is an integer
negative_passages.docid: 5801
negative_passages.text: Combinatorial proof help
negative_passages.docid: 93031
negative_passages.text: How to show that $\mathbb{Z}$ with the operation $m*n=m+(-1)^m n$ is associative?
negative_passages.docid: 62123
negative_passages.text: Proving that Tensor Product is Associative
negative_passages.docid: 108704
negative_passages.text: Help with proof of $|x+y| \geq |x|-|y|$
negative_passages.docid: 133762
negative_passages.text: A set which satisfies all conditions for a Group except associativity
negative_passages.docid: 76635
negative_passages.text: Proof through combinatorial argument
negative_passages.docid: 90904
negative_passages.text: Combinatorial proof of an identity with squared binomial coefficients
negative_passages.docid: 41726
negative_passages.text: Musical and combinatorial proof
negative_passages.docid: 22856
negative_passages.text: Ways to go from A to B(proof)
negative_passages.docid: 61939
negative_passages.text: Induction of inequality involving AP
negative_passages.docid: 141496
negative_passages.text: Could someone make the proof into a hinted exercise?
negative_passages.docid: 32772
negative_passages.text: Proving units in a ring
negative_passages.docid: 64586
negative_passages.text: How to prove that $\neg((A\cap B)\cup (\neg A \cap C)) = (A\cap\neg B)\cup (\neg A\cap \neg C)$
negative_passages.docid: 20346
negative_passages.text: 'Algebraic' way to prove the boolean identity $a + \overline{a}*b = a + b$