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Talk:Minkowski functional

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Should the convex set contain 0?

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I'm not sure if the convex set K (in the definition of the Minkowski's Functional) should contain 0. I know an alternative definition where K does not necessarily contain 0. In this case, the range of the function is

One to One correspondacne

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There is not really a 1to1 correspondence between circled balanced sets and seminorms. This is only "almost" true. For example will the open unit ball in R^2 and the closed unit ball in R^2 result in the same seminorm. --131.234.106.197 (talk) 14:56, 21 January 2008 (UTC)[reply]

Sublinearity

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See the following [1] for a better version of the proof of sublinearity. MikeRumex (talk) 08:51, 9 August 2012 (UTC)[reply]