L10 Flashcards
Proof and refutation terms syntax: propositions, true contexts, false contexts, values, continuations, contradictions
259
Expressions proof terms
260
refutation terms
261
Continuations
262
Op sem of CL+STLC
263
Preservation for contradictions
264
Type preservation for STLC+CL
265
Problematic definition of progress
266
how to make progress less vacuous
267-268
Why adding a halt config makes CL inconsistent
269
Why embed CL into IPL
270
Double Negation Translation
271
Triple negation elimination
272
IPL DNE
273
Dne for _
274
Theorem : classical terms embed into intuitionistic terms
275
CL->IPL translation of contexts
276
CL->IPL translation of contraictions
277
CL->IPL translation of most expressions
278
CL->IPL translation of most continuations
279
Translation of proof by contradiction
280
Translation of refutation by contradiction
281
Consequences of encoding CL into IPL
282
Key property that must hold for any embedding
283