[texhax] Theorem numbering
uwe.lueck at web.de
Tue Sep 14 16:10:41 CEST 2010
hh-brasil at bol.com.br, 14.09.2010 14:06:30:
> If I remember right, the counters start at zero as defined.
> I might be necessary you have to find the introduction of your counter in your style file
> and redefine it there. Even it should be possible to introduce a further counter or
> to change the counter's name, but this is not advised to newbies.
> This defines that at each new section the counter thm will be set to 0.
I had forgotten to add that "Theorem numbering" was quite wrong a name for the subject. The issue is "re-using" a theorem by text and by number. I mainly addressed the text, Barbara addressed the number. This works easily without modifying counters.
> 1. Re: Theorem numbering (Uwe Lueck)
>Date: Mon, 13 Sep 2010 21:57:11 +0200 (CEST)
>From: Uwe Lueck
>To: switzel at mathematik.tu-darmstadt.de, Barbara Beeton
>Cc: texhax at tug.org
>Subject: Re: [texhax] Theorem numbering
>Content-Type: text/plain; charset=UTF-8
>This may be one of the rather serious contributions of mine:
>Barbara Beeton , 04.06.2010 15:34:59:
>> stefan witzel asks for the ability to
>> "re-use" a theorem with the same number
>> as the original.
>> re-using the theorem text is
>> left as an exercise for the reader.
>Actually doing the exercise:
>I thought of the `extract' package (ctan.org/pkg/extract) or some
>quite a few packages have similar functions)?difficult
>to learn?more easy instead (although not tested, sorry):
>Type theorem body code in an extra file, say, thm-outs.tex.
>To typeset the theorem at its "proper" place, type
>Barbara?s xrefthm is enlightening,
>yet I would prefer the following generalization
>(in the document preamble?once I desired to have this!
>e.g.: Thm. 2* an ?analogue? of Thm. 2 for a different setting):
>To be used like this:
>I prepared the previous as HTML (looks finer) at
>(you may find an older version with some mistakes).
>> I'm using the amsthm-Package and number my theorem within sections, i.e.
>> Now I would like to quote a theorem from the end of the paper in the
>> introduction with its original number (which is 9.1 in my case).
>> Of course I could do so by manually setting the counters:
>> but this destroys the idea of automatic numbering, because if my
>> theorem becomes Theorem 9.2 because it is preceded by Lemma 9.1, it
>> has the wrong number in the introduction.
>> When I once had the problem of quoting a theorem *after* it had been
>> stated, I used the following makros the save and recover the counters:
>> But how can I can obtain the number before the actual statement (using
>> the \label)? I imagine there should exist solutions to this, but I did
>> not find them on the web (and I don't know enough about
>> makro-programming, to extract the necessary information from the
>> \label-data myself). Many thanks in advance!
>>the test file attached below uses \label
>>to identify the theorem number, and also
>>allows for multiple "re-used" theorem
>>numbers. re-using the theorem text is
>>left as an exercise for the reader.
>> -- bb
>>In this section we have two theorems.
>>The first is an ordinary theorem.
>>The other is a duplicate of a theorem in a later
>>section, with its original number.
>>Here we have a different ``forward referenced'' theorem.
>>This theorem also has a number from a later section.
>>In this section we have three theorems.
>>The first is an ordinary theorem.
>>But this one will be referenced earlier in the
>>paper with the theorem number from here.
>>And this one will also be referenced earlier
>>with its own number.
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