Computers and Technology, 14.09.2019 04:10, cchavcchav9606

The reverse of a string, introduced informally above, can be defined more precisely by the recursive rules ar = a, (wa)r = awr, for all a ∈ σ, w ∈ σ*. use this to prove that (uv)r = vrur, for all u, v ∈ σ+.

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The reverse of a string, introduced informally above, can be defined more precisely by the recursive...