query: Why does $(-1) \times (-1)$ give +1?
positive_passages.docid: 17515
positive_passages.text: Why is negative times negative = positive?
negative_passages.docid: 82097
negative_passages.text: If $A \succeq B$, is it true that $B^{-1} \succeq A^{-1}$?
negative_passages.docid: 115459
negative_passages.text: Proving this $F_{n+1} \cdot F_{n-1} - F^2_n = (-1)^n$ by induction
negative_passages.docid: 121767
negative_passages.text: Why $\det(A^{-1}) = 1/\det(A)$?
negative_passages.docid: 71767
negative_passages.text: What is the difference between $\Bbb{R^n}\times\Bbb{R^m}$ and $\Bbb{R^{m+n}}$?
negative_passages.docid: 17532
negative_passages.text: Why does Simplify[b-a] give -a+b and not b-a?
negative_passages.docid: 134330
negative_passages.text: Negative integer division surprising result
negative_passages.docid: 30781
negative_passages.text: Why the representation in the form of $Z'X(X'X)^{-1}X'Z$ can not be simplified into $Z'Z$
negative_passages.docid: 151930
negative_passages.text: What does it mean by $t=-1$?
negative_passages.docid: 69791
negative_passages.text: How to solve: T(n) = T(n - 1) + n
negative_passages.docid: 80004
negative_passages.text: Why is $1/i$ equal to $-i$?
negative_passages.docid: 68746
negative_passages.text: What is $f(f^{-1}(A))$?
negative_passages.docid: 57623
negative_passages.text: Does a +1/+1 counter remove a -1/-1 counter?
negative_passages.docid: 59872
negative_passages.text: How to prove $\inf(S)=-\sup(-S)$?
negative_passages.docid: 155285
negative_passages.text: difficulty of accepting $i^2 = -1$ for first timers
negative_passages.docid: 146339
negative_passages.text: Proof of -(-v)=v in a vector space
negative_passages.docid: 148668
negative_passages.text: How to show $A\times (B\cup C) = (A\times B)\cup (A\times C)$