* New Paper: Cartesian differential storage categories
@ 2014-05-29 19:09 Robert Seely
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From: Robert Seely @ 2014-05-29 19:09 UTC (permalink / raw)
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After some delays, the paper "Cartesian differential storage
categories" (Blute-Cockett-Seely) is available on-line, at the ArXiv
http://arxiv.org/abs/1405.6973
as well as on the third author's webpage
http://www.math.mcgill.ca/rags/difftl/cart-diff-stor.pdf
The abstact follows:
Cartesian Differential Storage Categories
by R. Blute, J.R.B. Cockett, and R.A.G. Seely
Abstract
Cartesian differential categories were introduced to provide an
abstract axiomatization of categories of differentiable
functions. The fundamental example is the category whose objects are
Euclidean spaces and whose arrows are smooth maps.
Tensor differential categories provide the framework for categorical
models of differential linear logic. The coKleisli category of any
tensor differential category is always a Cartesian differential
category. Cartesian differential categories, besides arising in this
manner as coKleisli categories, occur in many different and quite
independent ways. Thus, it was not obvious how to pass from Cartesian
differential categories back to tensor differential categories.
This paper provides natural conditions under which the linear maps of
a Cartesian differential category form a tensor differential
category. This is a question of some practical importance as much of
the machinery of modern differential geometry is based on models
which implicitly allow such a passage, and thus the results and tools
of the area tend to freely assume access to this structure.
The purpose of this paper is to make precise the connection between
the two types of differential categories. As a prelude to this,
however, it is convenient to have available a general theory which
relates the behaviour of "linear" maps in Cartesian categories to the
structure of Seely categories. The latter were developed to provide
the categorical semantics for (fragments of) linear logic which use a
"storage" modality. The general theory of storage, which underlies
the results mentioned above, is developed in the opening sections of
the paper and is then applied to the case of differential categories.
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