∅ | empty set | |
_{A}(x) | = | |
(a,b] | = | {x : a < x ≤ b} |
δ(t) | ||
Re(z) | real part of z | |
Im(z) | imaginary part of z | |
i or j | = | |
I_{N} | identity matrix of size N | |
A^{∗} | complex conjugate of A | |
A^{T} | transpose of A | |
A^{H} | transpose-conjugate of A | |
A^{−1} | inverse matrix of A | |
A^{#} | pseudo-inverse matrix of A | |
r.v./rv | random variable | |
ℙ | probability measure | |
ℙ_{θ} | probability measure indexed by θ | |
{X} | expectation of X | |
B_{θ} X | expectation of X under ℙ_{θ} | |
X_{c} = X − {X} | zero-mean random variable | |
var (X) = {|X_{c}|^{2}} | variance of X | |
cov (X, Y ) = | covariance of (X,Y) | |
cov (X) = cov (X, X) = var (X) | variance of X | |
{X|Y} | conditional expectation of X given Y | |
a converges ... |
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