query: Is x(t) = ax(t-1) + e stationary or not?
positive_passages.docid: 20038
positive_passages.text: Conceptual questions: Variance of a process
negative_passages.docid: 118417
negative_passages.text: Is $AA^T$ positive semidefinite?
negative_passages.docid: 134696
negative_passages.text: How can I show that the conditional expectation $E(X\mid X)=X$?
negative_passages.docid: 118949
negative_passages.text: If $(Tx \mathbin{|} x) = 0$ for all $x$ then $T = 0$
negative_passages.docid: 158938
negative_passages.text: Using DSolve to solve for x[t,parameter]
negative_passages.docid: 95123
negative_passages.text: General solution of expected value of E(f(X))?
negative_passages.docid: 56275
negative_passages.text: Vector derivative w.r.t its transpose $\frac{d(Ax)}{d(x^T)}$
negative_passages.docid: 69791
negative_passages.text: How to solve: T(n) = T(n - 1) + n
negative_passages.docid: 41779
negative_passages.text: Is $x/x$ equal to $1$
negative_passages.docid: 108452
negative_passages.text: When is an "ARIMA process" stationary?
negative_passages.docid: 88442
negative_passages.text: Prove that there's no ordered basis $E$ in which $T{x\choose y}={0\choose y}$ can be represented as $1\ 2\choose 2\ 4$
negative_passages.docid: 112428
negative_passages.text: Existence of least squares solution to $Ax=b$
negative_passages.docid: 81380
negative_passages.text: How fast does the sequence $y_t$ defined by $y_{t+1}=y_t(1-y_t)$ decay to zero?
negative_passages.docid: 52946
negative_passages.text: If $X$ is an orthogonal matrix, why does $X^TX = I$?
negative_passages.docid: 71437
negative_passages.text: How is the derivative of $\textrm{Trace}\left\{ X^T A X B\right\}$ with respect to $X$ equal to $AXB + A^TXB^T$?
negative_passages.docid: 138342
negative_passages.text: Proof of a matrix exponential identity
negative_passages.docid: 151930
negative_passages.text: What does it mean by $t=-1$?