query: How can I prove $AB = BA$
positive_passages.docid: 149801
positive_passages.text: prove that $TS = ST$
negative_passages.docid: 107494
negative_passages.text: prove $\frac {ab}{a+b} \geq \sum ^n_{i=1} \frac{a_ib_i}{a_i+b_i}$
negative_passages.docid: 10348
negative_passages.text: Prove that if the $\gcd(a,b)=1$, then $\gcd(a+b,ab)=1$
negative_passages.docid: 21807
negative_passages.text: on proving bac-cab rule, $\vec{A} \times ( \vec{B} \times \vec{C})= \vec{B} (\vec{A} \cdot\vec{C})- \vec{C}(\vec{A}\cdot\vec{B})$
negative_passages.docid: 110502
negative_passages.text: $AB=BA$ with same eigenvector matrix
negative_passages.docid: 29692
negative_passages.text: Proof verification: elementary Number Theory Proof of $am+bn = 1$
negative_passages.docid: 99631
negative_passages.text: Prove/Disprove: Find $a\in S_4$ that is not a power of $b$ such that $ab=ba$ while $b=(123)$
negative_passages.docid: 8638
negative_passages.text: If I know $AB$, how can I calculate $BA$?
negative_passages.docid: 78298
negative_passages.text: On the nilpotence of the matrix $AB-BA$
negative_passages.docid: 105921
negative_passages.text: Why do we have $ab=ba$?
negative_passages.docid: 43570
negative_passages.text: Finding two non-zero matrices where $AX = BA$
negative_passages.docid: 51321
negative_passages.text: Prove that $A = B = C = D$
negative_passages.docid: 88349
negative_passages.text: Are the eigenvalues of $AB$ equal to the eigenvalues of $BA$? (Citation needed!)
negative_passages.docid: 152817
negative_passages.text: Proving $\sup B=\inf A$
negative_passages.docid: 21737
negative_passages.text: If $A|B$ and $B|A$ then prove $A=\pm B$
negative_passages.docid: 22856
negative_passages.text: Ways to go from A to B(proof)
negative_passages.docid: 78736
negative_passages.text: Check my proof that $(ab)^{-1} = b^{-1} a^{-1}$