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3x3 lemma for pushouts #15

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Alizter opened this issue Sep 12, 2019 · 0 comments
Open

3x3 lemma for pushouts #15

Alizter opened this issue Sep 12, 2019 · 0 comments

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@Alizter
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Alizter commented Sep 12, 2019

Using Egberts exponential argument, show that 3x3 diagram for pushouts is equivalently a 3x3 diagram for pullbacks hence the lemma. Was discussed in HoTT#1001.
This was referenced Sep 12, 2019
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@Alizter Alizter mentioned this issue Sep 12, 2019
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