Give more examples of total and partial functions on natural numbers.
Answer: There are many examples of total functions. Addition, multiplication, and any combination of these, as well as the well-known factorial function, are all total. Subtraction is partial on natural numbers (but total on integers).
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Fernández, M. (2009). Answers to Selected Exercises. In: Models of Computation. Undergraduate Topics in Computer Science. Springer, London. https://doi.org/10.1007/978-1-84882-434-8_10
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