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Additional
lemma (logic)
English Wikipedia - The Free Encyclopedia
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Lemma (logic)
In
informal logic
and
argument mapping
, a
lemma
is simultaneously a
contention
for
premises
below it and a premise for a contention above it.
Transitivity
: If one has proof that
B
follows from
A
and proof of
A
, then one has proof of
B
.
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