نتایج جستجو برای: cup product
تعداد نتایج: 291022 فیلتر نتایج به سال:
OBJECTIVE To describe the epidemiology of injuries related to bottles, pacifiers, and sippy cups among young children in the United States. METHODS A retrospective analysis was conducted by using data from the National Electronic Injury Surveillance System for children <3 years of age treated in emergency departments (1991-2010) for an injury associated with a bottle, pacifier, or sippy cup. ...
Partial quotients of moment-angle complexes are topological analogues smooth, not necessarily compact toric varieties. In 1998, Buchstaber and Panov proposed a formula for the cohomology ring such partial quotient in terms torsion product involving corresponding Stanley-Reisner ring. We show that their gives correct cup if 2 is invertible chosen coefficient ring, but general. rectify this by de...
In this paper we propose a mathematical framework that can be used for defining cohomology of digital images. We state the Eilenberg-Steenrod axioms and the Universal Coefficient Theorem for this cohomology theory. We show that the Künneth formula doesn’t hold. A cup product is defined and its main properties are proved. 2010 Mathematics Subject Classification. 55N99, 68R99, 68U05, 68U10.
Given a quasi-projective complex variety X and a projective variety Y , one may endow the set of morphisms, Mor(X, Y ), from X to Y with the natural structure of a topological space. We introduce a convenient technique (namely, the notion of a functor on the category of “smooth curves”) for studying these function complexes and for forming continuous pairings of such. Building on this technique...
suppose $f$ is a map from a non-empty finite set $x$ to a finite group $g$. define the map $zeta^f_g: glongrightarrow mathbb{n}cup {0}$ by $gmapsto |f^{-1}(g)|$. in this article, we show that for a suitable choice of $f$, the map $zeta^f_g$ is a character. we use our results to show that the solution function for the word equation $w(t_1,t_2,dots,t_n)=g$ ($gin g$) is a character, where $w(t_1,t...
Let X be a complete complex algebraic variety of dimension n and let D be a divisor with strict normal crossings on X. In this paper we show that the cup product maps i+j D (X) are morphisms of mixed Hodge structures.
Terrestrial gross primary productivity (GPP) varies greatly over time and space. A better understanding of this variability is necessary for more accurate predictions of the future climate-carbon cycle feedback. Recent studies have suggested that variability in GPP is driven by a broad range of biotic and abiotic factors operating mainly through changes in vegetation phenology and physiological...
abstract background: premature neonates’ feeding is of great importance due to its effective role in their growth. these neonates should reach an independent oral nutrition stage before being discharged from the neonatal intensive care unit. therefore, the researcher decided to conduct a study on the effect of palady and cup feeding on premature neonates’ weight gain and their reaching full ora...
BACKGROUND Cancer in adolescents and young adults (AYAs) (15-39 years) is increasingly recognized as a distinct clinical and biological entity. Cancer of unknown primary (CUP), a disease traditionally presenting in older adults with a median age of 65 years, poses several challenges when diagnosed in AYA patients. This study describes clinicopathological features, outcomes and challenges in car...
We interpret the complexes defining rack cohomology in terms of a certain differential graded bialgebra. This yields elementary algebraic proofs old and new structural results for this theory. For instance, we exhibit two explicit homotopies controlling structure defects on cochain level: one commutativity defect cup product, other "Zinbielity" dendriform structure. also show that, quandle, pro...
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