Results 31 to 40 of about 196,348 (111)

طريقة عددية لحساب التكاملات الثنائية ذات المكاملات المعتلة والمعتلة المشتقة باستخدام قاعدة النقطة الوسطى عندما تكون اعداد الفترات الجزئية على البعدين غير متساوية

open access: yesJournal of Kufa for Mathematics and Computer, 2015
The main aim of this search is to derive method to find the values of the double integrals numerically its integrands have singularity at partial derivatives or the integrands are singular in one point or more of region of the integrals by using midpoint
Ali Mohammed   +2 more
doaj  

A smooth compactification of spaces of stability conditions: the case of the $A_{n}$ -quiver

open access: yesForum of Mathematics, Sigma
We propose a notion of multi-scale stability conditions with the goal of providing a smooth compactification of the quotient of the space of projectivized Bridgeland stability conditions by the group of autoequivalence.
Anna Barbieri   +2 more
doaj   +1 more source

RAAPNOTITIE 939

open access: yes, 2010
onderzoeksrappor
Anscher, T.J. ten
core   +1 more source

Nilpotent perturbations of m-isometric and m-symmetric tensor products of commuting d-tuples of operators

open access: yesDemonstratio Mathematica
If T1{{\mathbb{T}}}_{1} and T2{{\mathbb{T}}}_{2} are commuting dd-tuples of Hilbert space operators in B(ℋ)dB{\left({\mathcal{ {\mathcal H} }})}^{d} such that (T1*⊗I+I⊗T2*,T1⊗I+I⊗T2)\left({{\mathbb{T}}}_{1}^{* }\otimes I+I\otimes {{\mathbb{T}}}_{2}^{* },{
Duggal Bhagwati Prashad, Kim In Hyoun
doaj   +1 more source

Development and evaluation of an Arduino-based multi-sensor aquaculture water quality monitoring kit

open access: yesInternational Journal of Science, Technology, Engineering and Mathematics
Fish farmers struggle with the problem of fish mortality due to climate change, poisoning, and bad water quality. Estimates on the mortality of fishes ranges from 60% to 80% depending on the type of fish.
Izza Amiel P. Calajate   +12 more
doaj   +1 more source

RAAPRAPPORT 939

open access: yes, 2009
onderzoeksrappor
Flokstra, L.M.
core   +1 more source

A study of novel telephone sequence spaces and some geometric properties

open access: yesJournal of Inequalities and Applications
For a nonnegative integer k, let T k $\mathcal {T}_{k}$ denote the kth telephone number. Consider the matrix T = ( T k r ) $\mathfrak{T}=(\mathfrak {T}_{kr})$ given by T k r = { r T r − 1 T k + 1 − 1 , 0 ≤ r ≤ k , 0 , r > k , $$\begin{aligned} \mathfrak {
Taja Yaying
doaj   +1 more source

Compressive strength and cost analysis of concrete hollow blocks with upcycled plastics as replacement for choker aggregates

open access: yesInternational Journal of Science, Technology, Engineering and Mathematics
This study was conducted to test the compressive strength of concrete hollow blocks (CHBs) prepared from four treatments, with 0%, 1%, 2%, and 3% proportion of upcycled plastics as partial replacement to choker aggregates, find out which proportion is ...
Mark Anthony R. Meñez, Ersyl T. Biray
doaj   +1 more source

On Closedness of Some Homotypical Varieties of Semigroups

open access: yesJournal of Mathematics
It is well known that every subvariety of the variety of semigroups need not be absolutely closed. Thus, identifying those subvarieties that are closed in themselves or in larger varieties is an interesting open problem in the theory of semigroup ...
Noor Alam   +5 more
doaj   +1 more source

The Atiyah class on algebraic stacks

open access: yesForum of Mathematics, Sigma
We generalize Illusie’s definition of the Atiyah class to complexes with quasi-coherent cohomology on arbitrary algebraic stacks. We show that this gives a global obstruction theory for moduli stacks of complexes in algebraic geometry without derived ...
Nikolas Kuhn
doaj   +1 more source

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