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Mathematics, 10.07.2019 00:30 darkpain4371

If a is a symbol and s is a string, define #a(s) to be the number of occurrences of a in s. for example, #1(101100101) = 5. define #a(s) inductively, and then prove by structural induction that for any strings s and t, #a(s· t) = #a(s) + #a(t).

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If a is a symbol and s is a string, define #a(s) to be the number of occurrences of a in s. for exam...
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