2015-04-29 17:15:13 +00:00
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import algebra.group algebra.category
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2015-02-23 23:01:27 +00:00
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2015-05-07 23:20:20 +00:00
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open eq sigma unit category algebra
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2015-02-23 23:01:27 +00:00
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2015-04-22 02:33:21 +00:00
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section
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2015-02-23 23:01:27 +00:00
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parameters {P₀ : Type} [P : precategory P₀]
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structure my_structure := (a : P₀) (b : P₀) (f : @hom P₀ P a b)
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include P
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structure another_structure (X : my_structure) := (field1 : hom (my_structure.a X) (my_structure.a X))
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end
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