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* Well-formation rules are back in the methods; new theory synthesizing the ↵Josh Chen2018-08-141-1/+1
| | | | natural number predecessor function.
* Commit before testing polymorphic equality eliminatorJosh Chen2018-08-121-0/+1
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* Old application syntax incompatible with EisbachJosh Chen2018-08-071-4/+0
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* Partway through changing function application syntax style.Josh Chen2018-08-061-9/+12
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* Reorganize theoriesJosh Chen2018-08-041-35/+41
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* Unit and Null types. Methods.Josh Chen2018-07-121-1/+2
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* Universes implemented. Type rules modified accordingly. No more automatic ↵Josh Chen2018-07-111-23/+12
| | | | derivation of "A:U" from "a:A".
* Alternative implementation of universes using meta-level numerals.Josh Chen2018-07-111-32/+43
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* Pre-universe implementation commitJosh Chen2018-07-091-2/+23
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* Library snapshot. Methods written, everything nicely organized.Josh Chen2018-07-071-1/+1
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* Added attributes to type elimination rules, not sure if these will actually ↵Josh Chen2018-07-061-3/+7
| | | | be needed or useful later. Added [comp] attribute to be used by simplification met methods.
* Refactor HoTT_Methods.thy, proved more stuff with new methods.Josh Chen2018-07-031-1/+3
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* Rewrote methods: wellformed now two lines, uses named theorems. New, more ↵Josh Chen2018-07-031-4/+5
| | | | powerful derive method. Used these to rewrite proofs.
* Library organization and formattingJosh Chen2018-06-271-1/+3
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* Fixed wrong definition of snd_dep. Proved projection property of snd_dep. ↵Josh Chen2018-06-181-2/+1
| | | | Added type formation rules expressing necessity of the conditions.
* Removed all [simp] attributes, these will be added later when I set up the ↵Josh Chen2018-06-181-1/+1
| | | | simplifier. Proved simplification rule for dependent fst.
* Proof of projection functions now harder. Should look up automation methods.Josh Chen2018-06-171-1/+1
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* projectionsJosh Chen2018-06-151-27/+13
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* Type rules now have \"all\" premises explicitly stated, matching the ↵Josh Chen2018-06-121-15/+29
| | | | formulation in the HoTT book.
* Reorganize codeJosh Chen2018-06-091-0/+52
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