\chapter{Introduction}
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$\FullFock{\hilb{H}}$
$\FullFockFinite{\hilb{H}}$
$\BosonFock{\hilb{H}}$
$\BosonFockFinite{\hilb{H}}$

$\normord{\phi(x)}$ 

$V\sympcomp V\realorthcomp$

$\realscalarp{v}{w}$
$\symplecticp{v}{w}$

$\Domain{T}$

$\AlgebraicDirectSum{_{a}^{b} c}$

$\Re x$ 
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