Discussion of Homotopy Type Theory and Univalent Foundations
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From: stre...@mathematik.tu-darmstadt.de
To: "Michael Shulman" <shu...@sandiego.edu>
Cc: "Martin Escardo" <escardo...@googlemail.com>,
	"HomotopyT...@googlegroups.com" <homotopyt...@googlegroups.com>
Subject: Re: [HoTT] Does MLTT have "or"?
Date: Sun, 14 May 2017 11:54:13 +0200	[thread overview]
Message-ID: <b339a1afd7ac9e585c36531f675cf0f2.squirrel@webmail.mathematik.tu-darmstadt.de> (raw)
In-Reply-To: <CAOvivQzHVGmPk16Xz=9mj2Y8Lm9pQYtUYgCPyAij9-=uhXO5wQ@mail.gmail.com>

The question is not one of universal properties but of existence. I wo der
whether every posetal lccc has binary sups. Every cartesian closd poset is
lccc but need not have binary sups, e.g. the free ccc over 1 generator is
lccc but has no binary sums.

Thomas


  reply	other threads:[~2017-05-14  9:54 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-02  9:09 Martin Escardo
2017-05-02 19:04 ` [HoTT] " Michael Shulman
2017-05-03  6:47   ` Martin Escardo
2017-05-12 18:10   ` Martin Escardo
2017-05-12 18:41     ` Martin Escardo
2017-05-13 21:46     ` Michael Shulman
2017-05-14  9:54       ` stre... [this message]
2017-05-16  6:20       ` Michael Shulman
2017-05-03 10:55 ` Thomas Streicher
2017-05-03 14:25   ` Martin Escardo
2017-05-03 14:48     ` Thomas Streicher
2017-05-03 15:04       ` Martin Escardo
2017-05-03 12:17 ` Andrew Polonsky
2017-05-03 12:24   ` [HoTT] " Martin Escardo
2017-05-03 12:24   ` Michael Shulman
2017-05-06 13:51 ` Andrew Swan
2017-05-07 13:49   ` [HoTT] " Martin Escardo

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