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I was just wondering if there is any single English word for that.

We call things quantifiable, measurable etc. but none of these exactly fit the the question posted in subject.

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closed as not a real question by Mariano Suárez-Alvarez, Derek Jennings, Ryan Budney, a.r., Chandru1 Oct 5 '10 at 14:23

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

I don't think this is a real question... –  Mariano Suárez-Alvarez Oct 5 '10 at 13:57
If it's not yet a word, maybe it should be: "unmodelable". –  J. M. Oct 5 '10 at 14:07
I don't think this is the right site for this question, but I've answered anyway as I'm very keen on languages as well as mathematics. Sorry, but I'm voting to close. –  Derek Jennings Oct 5 '10 at 14:07
Hahaha. "Closed" –  anon Oct 5 '10 at 16:42
Now both the question and answer are "closed form" –  Bill Dubuque Oct 5 '10 at 16:57
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2 Answers 2

up vote 1 down vote accepted

I can think of a few that might fit the bill: unpredictable, incalculable, incomputable. But maybe you'd be better off asking on: http://english.stackexchange.com/questions

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For a mathematical function which cannot be expressed as a formula we say that it has no closed-form expression.

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It's not closed form. –  Shamim Hafiz Oct 5 '10 at 13:58
@Gunner, why not? –  anon Oct 5 '10 at 16:43
Closed-form has no meaning by itself. One needs to also state the associated class of "forms" that are referenced, e.g. the integral has no elementary closed-form means that it is not an elementary function (which has a precise meaning in differential algebra). –  Bill Dubuque Oct 5 '10 at 16:55
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