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In this paper, we prove that given a differential graded category C and B a full differential graded subcategory closed under coproducts, there is a canonical recollement of differential graded categories, for which we use enriched…

Representation Theory · Mathematics 2025-02-25 M. Lizbeth Shaid Sandoval Miranda , Valente Santiago Vargas , Edgar O. Velasco Páez

In this paper, we define the functor category Fquad associated to vector spaces over the field with two elements, F\_2, equipped with a quadratic form. We show the existence of a fully-faithful, exact functor \iota: \F \to Fquad, which…

Algebraic Topology · Mathematics 2007-05-23 Christine Vespa

In functional programming, datatypes a la carte provide a convenient modular representation of recursive datatypes, based on their initial algebra semantics. Unfortunately it is highly challenging to implement this technique in proof…

Logic in Computer Science · Computer Science 2015-09-11 Paolo Torrini , Tom Schrijvers

Let K be a comonad on a model category M. We provide conditions under which the associated category of K-coalgebras admits a model category structure such that the forgetful functor to M creates both cofibrations and weak equivalences. We…

Algebraic Topology · Mathematics 2014-02-26 Kathryn Hess , Brooke Shipley

In order to make the foundation model more efficient and effective, our idea is combining sequence transformation and state transformation. First, we prove the availability of rotary position embedding in the state space duality algorithm,…

Machine Learning · Computer Science 2024-12-23 Jingze Shi , Bingheng Wu

We show that state, reader, writer, and error monad transformers are instances of one general categorical construction: translation of a monad along an adjunction.

Category Theory · Mathematics 2025-03-27 Oleksandr Manzyuk

In this thesis, we construct a new version of orthogonal calculus for functors $F$ from $C_2$-representations to $C_2$-spaces, where $C_2$ is the cyclic group of order 2. For example, the functor $BO(-)$, which sends a $C_2$-representation…

Algebraic Topology · Mathematics 2024-08-29 Emel Yavuz

The original purpose of component-based development was to provide techniques to master complex software, through composition, reuse and parametrisation. However, such systems are rapidly moving towards a level in which software becomes…

Logic in Computer Science · Computer Science 2016-08-02 Renato Neves , Luis S. Barbosa , Dirk Hofmann , Manuel A. Martins

Let $A$ be a ring and $\M_A$ the category of $A$-modules. It is well known in module theory that for any $A $-bimodule $B$, $B$ is an $A$-ring if and only if the functor $-\otimes_A B: \M_A\to \M_A$ is a monad (or triple). Similarly, an $A…

Rings and Algebras · Mathematics 2012-01-27 Gabriella Böhm , Tomasz Brzezinski , Robert Wisbauer

We introduce the categories of geometric mixed Hodge modules on algebraic varieties over a subfield $k\subset\mathbb C$, and for a prime number $p$, the categories of geometric $p$-adic mixed Hodge modules on algebraic varieties over a…

Algebraic Geometry · Mathematics 2022-07-14 Johann Bouali

We develop and investigate a general theory of representations of second-order functionals, based on a notion of a right comodule for a monad on the category of containers. We show how the notion of comodule representability naturally…

Logic in Computer Science · Computer Science 2025-06-12 Danel Ahman , Andrej Bauer

The Hadamard Extension of a matrix is the matrix consisting of all Hadamard products of subsets of its rows. This construction arises in the context of identifying a mixture of product distributions on binary random variables: full column…

Machine Learning · Computer Science 2021-02-16 Spencer L. Gordon , Leonard J. Schulman

We observe that normalization by evaluation for simply-typed lambda-calculus with weak coproducts can be carried out in a weak bi-cartesian closed category of presheaves equipped with a monad that allows us to perform case distinction on…

Programming Languages · Computer Science 2019-02-20 Andreas Abel , Christian Sattler

We introduce dicodensity monads: a generalisation of pointwise codensity monads generated by functors to monads generated by mixed-variant bifunctors. Our construction is based on the notion of strong dinaturality (also known as Barr…

Logic in Computer Science · Computer Science 2026-03-03 Maciej Piróg , Filip Sieczkowski

In this paper, motivated by the theory of operads and PROPs we reveal the combinatorial nature of tensor calculus for strict tensor categories and show that there exists a monad which is described by the coarse-graining of graphs and…

Category Theory · Mathematics 2015-01-09 Sen Hu , Xuexing Lu , Yu Ye

For a triangulated category with products we develop a method for constructing a nice set of cogenerators, allowing us to prove a formal criterion in order to satisfy Brown representability for covariant functors. We apply this criterion…

Category Theory · Mathematics 2014-10-21 George Ciprian Modoi

The paper uses the formalism of indexed categories to recover the proof of a standard final coalgebra theorem, thus showing existence of final coalgebras for a special class of functors on categories with finite limits and colimits. As an…

Logic · Mathematics 2007-05-23 Benno van den Berg , Federico De Marchi

We study a model of side-effecting processes obtained by starting from a monad modelling base effects and adjoining free operations using a cofree coalgebra construction; one thus arrives at what one may think of as types of non-wellfounded…

Logic in Computer Science · Computer Science 2023-06-22 Sergey Goncharov , Lutz Schröder , Christoph Rauch , Julian Jakob

Every right adjoint functor between presentable $\infty$-categories is shown to decompose canonically as a coreflection, followed by, possibly transfinitely many, monadic functors. Furthermore, the coreflection part is given a presentation…

Algebraic Topology · Mathematics 2021-11-23 Lior Yanovski

We show that one can use model categories to construct rational orthogonal calculus. That is, given a continuous functor from vector spaces to based spaces one can construct a tower of approximations to this functor depending only on the…

Algebraic Topology · Mathematics 2017-03-16 David Barnes