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* Unit and Null types. Methods.Josh Chen2018-07-121-16/+34
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* Pre-universe implementation commitJosh Chen2018-07-091-20/+51
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* Added attributes to type elimination rules, not sure if these will actually ↵Josh Chen2018-07-061-1/+54
| | | | 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 Chen2018-07-031-18/+2
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* Decided on a new proper scheme for type rules using the idea of implicit ↵Josh Chen2018-06-171-0/+24
well-formed contexts and guaranteed conclusion well-formedness. Product type rules now follow this scheme.