Approximate injectivity and smallness in metric-enriched categories

J Adámek, J Rosický - Journal of Pure and Applied Algebra, 2022 - Elsevier
Abstract Properties of categories enriched over the category of metric spaces are
investigated and applied to a study of well-known constructions of metric and Banach …

[PDF][PDF] Normed spaces and the change of base for enriched categories

GSH Cruttwell - 2008 - reluctantm.com
This thesis is about two things: a desire to understand the concept of “normed space” in a
wider categorical context, and, as a result of this, a study of the change of base for enriched …

Metric-enriched categories and approximate Fra\"{i} ss\'{e} limits

W Kubiś - arXiv preprint arXiv:1210.6506, 2012 - arxiv.org
We develop the theory of approximate Fra\"{i} ss\'{e} limits in the context of categories
enriched over metric spaces. Among applications, we construct a generic projection on the …

Approximate injectivity

J Rosický, W Tholen - Applied Categorical Structures, 2018 - Springer
In a locally λ λ-presentable category, with λ λ a regular cardinal, classes of objects that are
injective with respect to a family of morphisms whose domains and codomains are λ λ …

Filtered colimits of∞-categories

N Rozenblyum - Harvard seminar notes, 2012 - Citeseer
Our conventions regarding∞-categories follow those of [DG]. In particular, whenever we say
category, unless otherwise specified, we will mean an∞-category. Furthermore, for objects …

Metrically generated theories

E Colebunders, R Lowen - Proceedings of the American Mathematical …, 2005 - ams.org
Many examples are known of natural functors $ K $ describing the transition from categories
$\mathcal {C} $ of generalized metric spaces to the “metrizable" objects in some given …

Exponentiation in V-categories

MM Clementino, D Hofmann - Topology and its Applications, 2006 - Elsevier
For a Heyting algebra V which, as a category, is monoidal closed, we obtain
characterizations of exponentiable objects and morphisms in the category of V-categories …

The metric injective hulls of normed spaces

NV Rao - Topology and its Applications, 1992 - Elsevier
Let M denote the category of metric spaces with contractions as morphisms and N denote
the category of real normed spaces with linear contractions as morphisms. Given any …

On injectivity in locally presentable categories

J Adámek, J Rosický - Transactions of the American Mathematical Society, 1993 - ams.org
Classes of objects injective wrt specified morphisms are known to be closed under products
and retracts. We prove the converse: a class of objects in a locally presentable category is …

On categorical notions of compact objects

MM Clementino - Applied Categorical Structures, 1996 - Springer
Due to the nature of compactness, there are several interesting ways of defining compact
objects in a category. In this paper we introduce and study an internal notion of compact …