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v2009.01.01 - Convex Optimization

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Appendix F<br />

Notation and a few definitions<br />

b<br />

b i<br />

b i:j<br />

b k (i:j)<br />

b T<br />

b H<br />

A −2T<br />

A T 1<br />

(italic abcdefghijklmnopqrstuvwxyz) column vector, scalar, logical<br />

condition<br />

i th entry of vector b=[b i , i=1... n] or i th b vector from a set or list<br />

{b j , j =1... n} or i th iterate of vector b<br />

or b(i:j) , truncated vector comprising i th through j th entry of vector b<br />

or b i:j,k , truncated vector comprising i th through j th entry of vector b k<br />

vector transpose<br />

Hermitian (conjugate) transpose b ∗T<br />

matrix transpose of squared inverse<br />

first of various transpositions of a cubix or quartix A<br />

A<br />

skinny<br />

matrix, scalar, or logical condition<br />

(italic ABCDEFGHIJKLMNOPQRSTUV WXY Z)<br />

⎡<br />

a skinny matrix; meaning, more rows than columns: ⎣<br />

⎤<br />

⎦. When<br />

there are more equations than unknowns, we say that the system Ax = b<br />

is overdetermined. [134,5.3]<br />

fat a fat matrix; meaning, more columns than rows:<br />

[ ]<br />

underdetermined<br />

2001 Jon Dattorro. CO&EDG version 2009.01.01. All rights reserved.<br />

Citation: Jon Dattorro, <strong>Convex</strong> <strong>Optimization</strong> & Euclidean Distance Geometry,<br />

Meboo Publishing USA, 2005.<br />

705

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