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A Logiweb sequent is a triple
where
is a finite set of premisses,
is a finite set of side conditions, and
is a result which holds if the given premisses and side conditions hold.
is a term and
and
are finite sets of terms. Finite sets of terms are represented as lists without repetitions. Finite sets of terms can contain zero, one, or more terms.
A sequent
represents the statement that if all terms in the set
are provable and all side conditions in
evaluate to
then
is provable. In other words, the sequent

represents that the statement

In particular, the sequent
represents the statement that
is provable.
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