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Additional
Strict conditional
English Wikipedia - The Free Encyclopedia
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Strict conditional
In
logic
, a
strict conditional
is a
modal operator
, that is, a
logical connective
of
modal logic
. It is
logically equivalent
to the
material conditional
of classical logic, combined with the
necessity
operator from
modal logic
. For any two
propositions
p
and
q
, the
formula
p
→
q
says that
p
materially implies
q
while
says that
p
strictly implies
q
. Strict conditionals are the result of
Clarence Irving Lewis
's attempt to find a conditional for logic that can adequately express
indicative conditionals
in natural language. They have also been used in studying
Molinist
theology.
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