Results 71 to 80 of about 9,831,323 (353)

The de Rham homotopy theory and differential graded category

, 2011
This paper is a generalization of arXiv:0810.0808. We develop the de Rham homotopy theory of not necessarily nilpotent spaces, using closed dg-categories and equivariant dg-algebras. We see these two algebraic objects correspond in a certain way.
A. Gómez-Tato, A.K. Bousfield, A.K. Bousfield, B. Blander, B. Toën, B. Toën, C. Simpson, D. Dugger, D. Quillen, D. Sullivan, D. Sullivan, D.-C. Cisinski, E.H. Brown, G. Hochschild, G.W. Whitehead, J. Jardine, J.P. Pridham, J.P. Pridham, L. Katzarkov, L. Katzarkov, M. Hovey, M. Vigué-Poirrier, P. Deligne, P. Goerss, P. Griffiths, S. Mac Lane, S. Moriya, Syunji Moriya, Y. Félix   +28 more
core   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Fundamentals of soft category theory

Bulletin of Computational Applied Mathematics, 2018
The soft category theory offers a way to study soft theories developed so far more generally. The main purpose of this paper is to introduce the basic algebraic operations in soft categories, and for that we introduce some algebraic operations, like ...
Sujit Kumar Sardar, Sugato Gupta, Bijan Davvaz   +2 more
doaj  

Structural Similarity: Formalizing Analogies Using Category Theory

Logics
Analogies are an important part of human cognition for learning and discovering new concepts. There are many different approaches to defining analogies and how new ones can be found or constructed.
Claire Ott
doaj   +1 more source

Towards a Convenient Category of Topological Domains [PDF]

, 2003
We propose a category of topological spaces that promises to be convenient for the purposes of domain theory as a mathematical theory for modelling computation. Our notion of convenience presupposes the usual properties of domain theory, e.g.
Simpson, Alex
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Robert Rosen’s Relational Biology Theory and His Emphasis on Non-Algorithmic Approaches to Living Systems

Mathematics
This paper examines the use of algorithms and non-algorithmic models in mathematics and science, especially in biology, during the past century by summarizing the gradual development of a conceptual rationale for non-algorithmic models in biology. First,
Patricia A. Lane
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Quantum Structures and Category Theory

Advances in Electrical and Electronic Engineering, 2004
The methods and constructions of category theory are suitable tools for studying quantum structures and generalized probability. The aim of the present paper is to support our claim via several examples and to motivate further research in this area.
Roman Fric
doaj  

String Diagrams for Premonoidal Categories [PDF]

Logical Methods in Computer Science
Premonoidal categories are monoidal categories without the interchange law while effectful categories are premonoidal categories with a chosen monoidal subcategory of interchanging morphisms. In the same sense that string diagrams, pioneered by Joyal and
Mario Román, Paweł Sobociński
doaj   +1 more source