associative
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Associative --
from
MathWorld
Three
elements
x
,
y
and
z
of
a
set
S
are
said
to
be
associative
under
a
binary
operation *
if
they
satisfy
x
*(y*z) = (
x
*y)*z.
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mathworld.wolfram.com/Associative.html -
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Associativity -
Wikipedia
,
the
free
encyclopedia
...
Put
another
way
,
no
parentheses
are
required
for
an
associative operation.
Consider
for
instance
the
equation
...
We
say
that
"
addition
of
real
numbers
is
an
associative operation". ...
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.wikipedia.org/wiki/Associative -
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