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2018-08-16Prod.thy now has the correct definitional equality structure rule. ↵Josh Chen1-1/+1
Definition of function composition and properties.
2018-08-16Prod.thy now has the correct definitional equality structure rule. ↵Josh Chen1-1/+1
Definition of function composition and properties.
2018-08-14Well-formation rules are back in the methods; new theory synthesizing the ↵Josh Chen1-1/+1
natural number predecessor function.
2018-08-12Commit before testing polymorphic equality eliminatorJosh Chen1-0/+1
2018-08-07Old application syntax incompatible with EisbachJosh Chen1-4/+0
2018-08-06Partway through changing function application syntax style.Josh Chen1-9/+12
2018-08-04Reorganize theoriesJosh Chen1-35/+41
2018-07-12Unit and Null types. Methods.Josh Chen1-1/+2
2018-07-11Universes implemented. Type rules modified accordingly. No more automatic ↵Josh Chen1-23/+12
derivation of "A:U" from "a:A".
2018-07-11Alternative implementation of universes using meta-level numerals.Josh Chen1-32/+43
2018-07-09Pre-universe implementation commitJosh Chen1-2/+23
2018-07-07Library snapshot. Methods written, everything nicely organized.Josh Chen1-1/+1
2018-07-06Added attributes to type elimination rules, not sure if these will actually ↵Josh Chen1-3/+7
be needed or useful later. Added [comp] attribute to be used by simplification met methods.
2018-07-03Refactor HoTT_Methods.thy, proved more stuff with new methods.Josh Chen1-1/+3
2018-07-03Rewrote methods: wellformed now two lines, uses named theorems. New, more ↵Josh Chen1-4/+5
powerful derive method. Used these to rewrite proofs.
2018-06-27Library organization and formattingJosh Chen1-1/+3
2018-06-18Fixed wrong definition of snd_dep. Proved projection property of snd_dep. ↵Josh Chen1-2/+1
Added type formation rules expressing necessity of the conditions.
2018-06-18Removed all [simp] attributes, these will be added later when I set up the ↵Josh Chen1-1/+1
simplifier. Proved simplification rule for dependent fst.
2018-06-17Proof of projection functions now harder. Should look up automation methods.Josh Chen1-1/+1
2018-06-15projectionsJosh Chen1-27/+13
2018-06-12Type rules now have \"all\" premises explicitly stated, matching the ↵Josh Chen1-15/+29
formulation in the HoTT book.
2018-06-09Reorganize codeJosh Chen1-0/+52