7 lines
264 B
Text
7 lines
264 B
Text
import data.vector
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def g {n m : nat} (v : vector nat (n + m)) : vector nat (m + n) :=
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eq.rec_on (add_comm n m) v -- Worked before
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def f {n m : nat} (v : vector nat (n + m)) : vector nat (m + n) :=
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eq.cases_on (add_comm n m) v -- eq.cases_on was not being erased
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