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Author Origin and history of query operator (?-)
Michael D. Kersey

2005-03-23, 3:58 pm

What is the origin and history of "?-", the Prolog prompt and operator?

Is the "-" intended to be an indication of resolution refutation?

Sometimes a rose is just a rose and a prompt is just a prompt, but I'd
like to be certain and have found little concerning the history of this
operator.
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