<s>
A	O
fuzzy	B-General_Concept
relation	I-General_Concept
is	O
the	O
cartesian	O
product	O
of	O
mathematical	O
fuzzy	O
sets	O
.	O
</s>
<s>
Two	O
fuzzy	O
sets	O
are	O
taken	O
as	O
input	O
,	O
the	O
fuzzy	B-General_Concept
relation	I-General_Concept
is	O
then	O
equal	O
to	O
the	O
cross	O
product	O
of	O
the	O
sets	O
which	O
is	O
created	O
by	O
vector	O
multiplication	O
.	O
</s>
<s>
From	O
a	O
historical	O
perspective	O
,	O
the	O
first	O
fuzzy	B-General_Concept
relation	I-General_Concept
was	O
mentioned	O
in	O
the	O
year	O
1971	O
by	O
Lotfi	O
A	O
.	O
Zadeh	O
.	O
</s>
<s>
A	O
practical	O
approach	O
to	O
describe	O
a	O
fuzzy	B-General_Concept
relation	I-General_Concept
is	O
based	O
on	O
a	O
2d	O
table	O
.	O
</s>
<s>
Fuzzy	B-General_Concept
relations	I-General_Concept
can	O
be	O
utilized	O
in	O
fuzzy	O
databases	O
.	O
</s>
