28 lines
815 B
Text
28 lines
815 B
Text
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- When using the "have" or "assert" tactic, no coercion is applied to the type. So you have to write for example
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`have g : Group.carrier G, from _,`
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instead of
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`have g : G, from _,`
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- When using the calc mode for homotopies, you have to give the proofs using a tactic (e.g. `by exact foo` instead of `foo`)
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Issues which are not bugs, but still good to know
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- once you start tactic mode, you cannot specify universe levels anymore
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- esimp is slow, and runs out of memory easily. It is good behavior to split up definitions. So instead of
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```
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equiv.MK (* big function *)
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(* big inverse *)
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(* long proof *)
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(* long proof *)
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```
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first write the functions f and g and then write
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```
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equiv.MK f
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g
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abstract (* long proof *) end
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abstract (* long proof *) end
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```
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