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== Propose merging "Open sentence" article to "Propositional function" ==
There is an article [[Open sentence]]. I believe "open sentences" and "propositional functions" are the same topic. Churchill's ''Logic: An Introduction'' states, "Propositional functions are also called ''open sentences'' because...". For that matter, I believe "Sentential function", which is currently a redirect to "open sentence" is also a synonym for the same concept. I do not believe the current "open sentence" article is <s>not</s> of high quality, and this shorter article is actually better. In any case, I propose that we merge "open sentence" here. If nobody comments, my strategy would be to mostly just create a redirect from "open sentence" here and just cherry-pick a few choice sentences. This a rather important topic in logic, so it's a shame the articles aren't very good yet. I'll wait for a while (say at least a week) for more opinions. It would be good to know if you oppose the merger and why (I don't anticipate this though) and which phrase you think deserves to be the title (by default I'm assuming "Propositional function" because I've heard it slightly more in use than the other two. Once the merger is performed, it would be good to get the references up-to-speed too. The current ones aren't very good. I have probably four or five books in my personal library that I could use to cite. [[User:Jason Quinn|Jason Quinn]] ([[User talk:Jason Quinn|talk]]) 03:13, 1 February 2013 (UTC)
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