Re: [isabelle] Proof help on Cardinality and list_all2

On 07.05.2012 20:06, Aaron W. Hsu wrote:
    show ?thesis
      by (simp add: eq_cart card_image subset_inj_on[OF inj]

What is the OF here?  I understand the other elements, but what does the
subset_inj_on[OF inj] part do?

A[OF B] discharges the first premise of A with B.

  -- Lars

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