Results 1 to 10 of about 2,565,823 (58)
Shapes and Positions of Black Hole Shadows in Accretion Disks and Spin Parameters of Black Holes [PDF]
J.Korean Phys.Soc.45:S1808-S1812,2004;
Astrophys.J.611:996-1004,2004, 2004 Can we determine a spin parameter of a black hole by observation of a black hole shadow in an accretion disk? In order to answer this question, we make a qualitative analysis and a quantitative analysis of a shape and a position of a black hole shadow casted by a rotating black hole on an optically thick accretion disk and its dependence on an angular ...
arxiv +1 more source
The BM@N spectrometer at the NICA accelerator complex [PDF]
arXiv, 2023 BM@N (Baryonic Matter at Nuclotron) is the first experiment operating and taking data at the Nuclotron/NICA ion-accelerating complex.The aim of the BM@N experiment is to study interactions of relativistic heavy-ion beams with fixed targets. We present a technical description of the BM@N spectrometer including all its subsystems.
arxiv
A Piece of the Lepton Theory from a Probability [PDF]
arXiv, 2001 A masses of a leptons deduced from a representation of a probability density vector by a spinors. A massive W and Z bosons and a massless A boson are obtained from a transformations for which a density vector is invariant.
arxiv
On a question of A. Balog [PDF]
arXiv, 2015 We give a partial answer to a conjecture of A. Balog, concerning the size of AA+A, where A is a finite subset of real numbers. Also, we prove several new results on the cardinality of A:A+A, AA+AA and A:A + A:A.
arxiv
Dinâmica da resistência a inseticidas diamidas em populações de >i<Helicoverpa armigera>/i< (Lepidoptera: Noctuidae) do Brasil [PDF]
, 2021 Dyrson de Oliveira Abbade Neto
openalex +1 more source
Enumeration of symmetric centered rhombus tilings of a hexagon [PDF]
arXiv, 2013 A rhombus tiling of a hexagon is said to be centered if it contains the central lozenge. We compute the number of vertically symmetric rhombus tilings of a hexagon with side lengths $a, b, a, a, b, a$ which are centered. When $a$ is odd and $b$ is even, this shows that the probability that a random vertically symmetric rhombus tiling of a $a, b, a, a ...
arxiv
Restricted-sum-dominant sets [PDF]
arXiv, 2017 Let $A$ be a nonempty finite subset of an additive abelian group $G$. Define $A + A := \{a + b : a, b \in A\}$ and $A \dotplus A := \{a + b : a, b \in A~\text{and}~ a \neq b\}$. The set $A$ is called a {\em sum-dominant (SD) set} if $|A + A| > |A - A|$, and it is called a {\em restricted sum-domonant (RSD) set} if $|A \dotplus A| > |A - A|$.
arxiv
VIAS DE RESISTÊNCIA DO MOSQUITO AEDES AEGYPTI A INSETICIDAS [PDF]
, 2022 Ruan Pablo Cruz Fonteles +6 more
openalex +1 more source
DESAFIO PARA SAÚDE PÚBLICA: RESISTÊNCIA DE INSETOS VETORES A INSETICIDAS [PDF]
, 2022 Morgana M. C. de S. L. Diniz +1 more
openalex +1 more source
Sharp Bounds for Neuman Means in Terms of Geometric, Arithemtic and Quadratic Means [PDF]
arXiv, 2014 In this paper, we find the greatest values $\alpha_{1}$, $\alpha_{2}$, $\alpha_{3}$, $\alpha_{4}$, $\alpha_{5}$, $\alpha_{6}$, $\alpha_{7}$, $\alpha_{8}$ and the least values $\beta_{1}$, $\beta_{2}$, $\beta_{3}$, $\beta_{4}$, $\beta_{5}$, $\beta_{6}$, $\beta_{7}$, $\beta_{8}$ such that the double inequalities $$A^{\alpha_{1}}(a,b)G^{1-\alpha_{1}}(a,b)<
arxiv