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A pass through section "Existence of omega (the set of natural numbers)" #4071

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merged 7 commits into from
Jul 4, 2024

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@jkingdon jkingdon commented Jul 2, 2024

This mostly ends up being entries for mmil.html but there is a tweak to some of the text in comments in set.mm and iset.mm.

This is ax-inf , zfinf , axinf2 , axinf , and inf5 .
There are some notes about which ones would be feasible.
Also isfinite , omenps , and omensuc
These are various changes to text:

* In iset.mm, change the section header and df-iom comment to reflect
  exmidonfin .
* In iset.mm, link to df-inn now that we have it.
* In set.mm, use the wording from iset.mm regarding the difference
  between _om and NN .  The problem with the previous wording is that
  "completely different" seems like a bit of a strong phrase given
  the large amount of similarity.
* In mmil.html, mention df-om because iset.mm has df-iom instead.
It isn't immediately clear to me whether decidable equality gives us
everything we need to prove this but I think maybe it does.
@jkingdon jkingdon merged commit 9ca9cd2 into metamath:develop Jul 4, 2024
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@jkingdon jkingdon deleted the infdifsndc branch July 4, 2024 03:47
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4 participants