<s>
Such	O
a	O
problem	O
is	O
an	O
infinite-dimensional	B-Algorithm
optimization	I-Algorithm
problem	O
,	O
because	O
,	O
a	O
continuous	O
quantity	O
cannot	O
be	O
determined	O
by	O
a	O
finite	O
number	O
of	O
certain	O
degrees	O
of	O
freedom	O
.	O
</s>
<s>
Infinite-dimensional	B-Algorithm
optimization	I-Algorithm
problems	O
can	O
be	O
more	O
challenging	O
than	O
finite-dimensional	O
ones	O
.	O
</s>
<s>
Several	O
disciplines	O
which	O
study	O
infinite-dimensional	B-Algorithm
optimization	I-Algorithm
problems	O
are	O
calculus	B-Algorithm
of	I-Algorithm
variations	I-Algorithm
,	O
optimal	O
control	O
and	O
shape	O
optimization	O
.	O
</s>
