<s>
Finite	B-Algorithm
element	I-Algorithm
exterior	I-Algorithm
calculus	I-Algorithm
(	O
FEEC	O
)	O
is	O
a	O
mathematical	O
framework	O
that	O
formulates	O
finite	B-Application
element	I-Application
methods	I-Application
using	O
chain	O
complexes	O
.	O
</s>
<s>
Its	O
main	O
application	O
has	O
been	O
a	O
comprehensive	O
theory	O
for	O
finite	B-Application
element	I-Application
methods	I-Application
in	O
computational	O
electromagnetism	O
,	O
computational	O
solid	O
and	O
fluid	O
mechanics	O
.	O
</s>
<s>
Finite	B-Algorithm
element	I-Algorithm
exterior	I-Algorithm
calculus	I-Algorithm
is	O
sometimes	O
called	O
as	O
an	O
example	O
of	O
a	O
compatible	O
discretization	B-Algorithm
technique	O
,	O
and	O
bears	O
similarities	O
with	O
discrete	B-Algorithm
exterior	I-Algorithm
calculus	I-Algorithm
,	O
although	O
they	O
are	O
distinct	O
theories	O
.	O
</s>
<s>
A	O
related	O
variational	O
saddle-point	O
formulation	O
for	O
mixed	B-Algorithm
quantities	O
is	O
then	O
generated	O
.	O
</s>
<s>
Discretization	B-Algorithm
to	O
a	O
mesh-related	O
subcomplex	O
is	O
done	O
requiring	O
a	O
collection	O
of	O
projection	B-Algorithm
operators	I-Algorithm
which	O
commute	O
with	O
the	O
differential	O
operators	O
.	O
</s>
