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fns1#image vs. fns1#range #4

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lars-hellstrom opened this issue Jul 18, 2017 · 3 comments
Open

fns1#image vs. fns1#range #4

lars-hellstrom opened this issue Jul 18, 2017 · 3 comments
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@lars-hellstrom
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From the fns1 content dictionary, it is not clear which of these is the codomain of a function and which is the range/image of a function. The description of fns1#range states:

It should be noted that this is not necessarily equal to the image, it is merely required to contain the image.

Then comes a CMP, which states:

the range of f is a subset of the image of f

The following FMP agrees with the CMP, but the description says the opposite.

@JamesHDavenport
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Humm: looks like a mess. In particular MathML3 disagrees somewhat as well. I need to look at this.

@car222222
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Did anyone look at MathML yet?

@kohlhase
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kohlhase commented Oct 2, 2017

This is also discussed in OpenMath/OM3#130, which should be consulted.

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