4.AdverbUsed to clarify that a statement is made in analogy, and every detail may not be strictly true.
"In the short exact sequence
0
→
q
A
→
r
B
→
s
C
→
t
0
{\displaystyle 0\xrightarrow {q} A\xrightarrow {r} B\xrightarrow {s} C\xrightarrow {t} 0}
,
B
{\displaystyle B}
is morally
A
×
C
{\displaystyle A\times C}
, even if in reality the sequence may fail to split."