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No domain specific knowledge
Say something about derivation trees.
Say something about the structural formulas
Logics are large:
Proof checker must be small.
Uses:  Logical framework
Shipment of proofs
Means formalization of proofs
Uniformity is important, since logic might change.  We do not want to invent a new proof checker for each logic we are trying, we are more interested in one Trustworthy proof checker.  We have one, the type checker for LF, expressive enough
Shipment of proofs
Means formalization of proofs
Uniformity is important, since logic might change.  We do not want to invent a new proof checker for each logic we are trying, we are more interested in one Trustworthy proof checker.  We have one, the type checker for LF, expressive enough
Shipment of proofs
Means formalization of proofs
Uniformity is important, since logic might change.  We do not want to invent a new proof checker for each logic we are trying, we are more interested in one Trustworthy proof checker.  We have one, the type checker for LF, expressive enough
Shipment of proofs
Means formalization of proofs
Uniformity is important, since logic might change.  We do not want to invent a new proof checker for each logic we are trying, we are more interested in one Trustworthy proof checker.  We have one, the type checker for LF, expressive enough
Shipment of proofs
Means formalization of proofs
Uniformity is important, since logic might change.  We do not want to invent a new proof checker for each logic we are trying, we are more interested in one Trustworthy proof checker.  We have one, the type checker for LF, expressive enough
No domain specific knowledge
Say something about derivation trees.
Say something about the structural formulas
Say : Substitution, weakening and contraction are implicit.
Ask Frank about what he means with logic specific theorem provers can be used