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use DB indices in term rewriting/demod #63

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c-cube opened this issue Aug 1, 2019 · 0 comments
Open

use DB indices in term rewriting/demod #63

c-cube opened this issue Aug 1, 2019 · 0 comments
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D-hard I-perf performance related issues I-superposition research

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@c-cube
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c-cube commented Aug 1, 2019

do the De Bruijn switch for rewriting/demod

  • convert l=r into De Bruijn indices (easy)
  • write matching env:term db_env -> pattern:term -> term -> term db_env
    (where only DB variables can be bound in the pattern)
  • write a small, simple, lightweight index for De Bruijn terms
  • re-write demod/rewriting to use this representation (carry a db_env
    along, as a kind of stack)

pros: would make rewriting easier (no more renaming needed)
cons: hard
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