<s>
The	O
collection	O
of	O
all	O
copositive	O
matrices	O
is	O
a	O
proper	O
cone	O
;	O
it	O
includes	O
as	O
a	O
subset	O
the	O
collection	O
of	O
real	O
positive-definite	B-Algorithm
matrices	I-Algorithm
.	O
</s>
