Search results for " Cat"
showing 10 items of 7219 documents
OPERADS AND JET MODULES
2005
Let $A$ be an algebra over an operad in a cocomplete closed symmetric monoidal category. We study the category of $A$-modules. We define certain symmetric product functors of such modules generalising the tensor product of modules over commutative algebras, which we use to define the notion of a jet module. This in turn generalises the notion of a jet module over a module over a classical commutative algebra. We are able to define Atiyah classes (i.e. obstructions to the existence of connections) in this generalised context. We use certain model structures on the category of $A$-modules to study the properties of these Atiyah classes. The purpose of the paper is not to present any really de…
Tres tablas más que añadir al catálogo de Vicente Macip. (Albaida, h. 1468- Valencia, 1551)
2013
Bibliography of linguistic studies on the early Latvian texts (16th–18th cc.) (until 2019)
2021
Šī elektroniskā bibliogrāfija aptver no pētniecības pirmsākumiem 19. gadsimtā līdz 2019. gadam tapušos valodnieciskos pētījumus par latviešu valodas 16.–18. gadsimta tekstiem. Tajā apkopoti dažāda apjoma pētījumi, sākot no zinātnisko konferenču tēzēm un beidzot ar vairāku sējumu izdevumiem. This electronic bibliography covers linguistic studies dealing with early Latvian texts (16th–18th cc.) from the research on these started in the 19th c. until 2019. It comprises studies of various kinds, from conference abstracts to issues comprising several volumes.
La fortificación del Reino de Valencia en la década de1640 a la luz de la revolución militar
2019
This article proposes a study of the traditions in defensive architecture that concurred in the projects designed by Spanish military engineers for the fortification of the Valencian frontier in 1648 and 1649, in the context of the War of Catalonia (1640-1652). For this it is essential to follow the route of the Valencian adaptations to the military revolution in the matter of fortifications throughout the sixteenth century and compare them with those brought to Valencia in 1641 by the Marquis of Leganes and his engineers from the school of Milan.
Āru vārdi 17. gadsimta beigu Vidzemes kartēs. Sāvienas (Sawensee) un Aburtu (Lüggen) muižas piemērs
2020
Vidzeme, one of the cultural and historical regions of Latvia, became a part of the kingdom of Sweden during the 17th century. Subsequently, Swedish cartographers mapped the estates of Vidzeme and then compiled maps of larger territories then called castle districts. The present research inspects 11 of these late 17th century maps and analyzes the microtoponyms found there. For an illustration, the maps of Sāviena (Sawensee) and Aburti (Lüggen) estates are chosen. This paper consider as microtoponyms not only the names of meadows, forests, swamps and hills, but also some hydronyms denoting smaller rivers and lakes that had not yet been academically analyzed, in total names of 26 objects. Th…
Introduction to Gestural Similarity in Music. An Application of Category Theory to the Orchestra
2019
Mathematics, and more generally computational sciences, intervene in several aspects of music. Mathematics describes the acoustics of the sounds giving formal tools to physics, and the matter of music itself in terms of compositional structures and strategies. Mathematics can also be applied to the entire making of music, from the score to the performance, connecting compositional structures to acoustical reality of sounds. Moreover, the precise concept of gesture has a decisive role in understanding musical performance. In this paper, we apply some concepts of category theory to compare gestures of orchestral musicians, and to investigate the relationship between orchestra and conductor, a…
Latvijas nacionalās valsts idejas tapšana un viņas izpausmes veidi: (1892.g.-1919.gada 18. novembrim), 2. daļa
1935
ChemInform Abstract: Recyclable Catalyst Reservoir: Oxidation of Alcohols Mediated by Noncovalently Supported Bis(imidazolium)-Tagged 2,2,6,6-Tetrame…
2014
ZrO2 Based materials as photocatalysts for 2-propanol oxidation by using UV and solar light irradiation and tests for CO2 reduction
2018
Abstract Bare ZrO2, Ce doped ZrO2 and Er doped ZrO2 samples have been prepared by a hydrothermal process and have been used as photocatalysts for 2-propanol oxidation reaction in gas solid regime. Moreover, some preliminary tests have been carried out for CO2 reduction. The samples were physico-chemically characterized and both bare and doped ZrO2 based materials resulted active for oxidation and reduction reactions by using UV and solar irradiation. The reactivity results have been correlated with the compositional, structural and morphological features of the photocatalysts.
Investigations in intensification of grain drying by active ventilation applying ozone
2020
The financial support of the Rural Support Service project No l8-00-A01620-000003 “Technology development of grain drying with active ventilation using ozone” is greatly acknowledged. The authors thank for the support and active cooperation the representatives of the farm “Mazkalniņi” Dr.sc.ing. Aivars Cēsnieks and ing. Sandris Cēsnieks.