Surjection
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Difference (from prior minor revision)
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Changed: 2c2
which maps the domain
?
X
to the
range
Y
which maps the
domain
X
to the
range
Y
Changed: 5c5
see also:
Bijection
see also:
Bijection
A
surjection
(or
onto
) is a
function
f
:
X
->
Y
which maps the
domain
X
to the
range
Y
such that, for every
y
in
Y
there is at least one
x
in
X
such that
f
(
x
) =
y
.
see also:
Bijection