SpaceX—Sailing Close to the Space Weather? by Mike Hapgood, Huixin Liu, Noé Lugaz

Subjects: “…SpaceX…”
Get full text

Space Weather Environment During the SpaceX Starlink Satellite Loss in February 2022 by Tzu‐Wei Fang, Adam Kubaryk, David Goldstein, Zhuxiao Li, Tim Fuller‐Rowell, George Millward, Howard J. Singer, Robert Steenburgh, Solomon Westerman, Erik Babcock

“…Abstract On 3 February 2022, SpaceX Starlink launched and subsequently lost 38 of 49 satellites due to enhanced neutral density associated with a geomagnetic storm. …”
Get full text

SPARQ: Efficient Entanglement Distribution and Routing in Space–Air–Ground Quantum Networks by Mohamed Shaban, Muhammad Ismail, Walid Saad

“…In this article, a space–air–ground quantum (SPARQ) network is developed as a means for providing a seamless on-demand entanglement distribution. …”
Get full text

Thermospheric Neutral Density Variation During the “SpaceX” Storm: Implications From Physics‐Based Whole Geospace Modeling by Dong Lin, Wenbin Wang, Katherine Garcia‐Sage, Jia Yue, Viacheslav Merkin, Joseph M. McInerney, Kevin Pham, Kareem Sorathia

Get full text

Analysis of the Starlink Satellite Network Filing Application by Wenhan YANG, Guoliang HUA, Yan FENG, Yuanfu LI, Ranran HOU

“…The frequency and orbit requirements of Starlink were investigated and compared with the satellite network fi llings from SpaceX.And then the priority of SpaceX in the global frequency orbit resource competition was analyzed.Then, through interpreting the terms of the Radio Regulations that cited by SpaceX, the strategies, techniques and possible actions of SpaceX in application and modifi cation for satellite network fi llings were studied.The analysis results of this paper can provide reference for the network resources application and modifi cation work of low-orbit satellite Internet constellation in China.…”
Get full text

Recognition of Finite Bitopological Spaces with Unique Isolated Point by Devi Selvam, Sivaramakrishnan Monikandan

“…The {deck} of a bitopological space $(X, \tau_{1}, \tau_{2})$ is the set $\mathscr{D}(X)=\{[X_{x}]:x\in X\},$ where $[Z]$ denotes the pair-homeomorphism class of $Z$. …”
Get full text

On generalized ω-closed sets by Khalid Y. Al-Zoubi

“…The class of ω-closed subsets of a space (X,τ) was defined to introduce ω-closed functions. …”
Get full text

Some Properties of lp(A,X) Spaces by Xiaohong Fu, Songxiao Li

“…We provide a representation of elements of the space lp(A,X) for a locally convex space X and 1≤p<∞ and determine its continuous dual for normed space X and 1<p<∞. …”
Get full text

A note on rings of continous functions by J. S. Yang

“…For a topological space X, and a topological ring A, let C(X,A) be the ring of all continuous functions from X into A under the pointwise multiplication. …”
Get full text

I-Lindelof spaces by Khalid Al-Zoubi, Bassam Al-Nashef

“…We define a space (X,T) to be I-Lindelof if every cover &#x1D49C; of X by regular closedsubsetsof the space (X,T) contains a countable subfamily &#x1D49C;′ suchthat X=∪{int(A):A∈A′}. …”
Get full text

On a higher-order evolution equation with a Stepanov-bounded solution by Aribindi Satyanarayan Rao

“…We study strong solutions u:ℝ→X, a Banach space X, of the nth-order evolution equation u(n)−Au(n−1)=f, an infinitesimal generator of a strongly continuous group A:D(A)⊆X→X, and a given forcing term f:ℝ→X. …”
Get full text

Lipschitz measures and vector-valued Hardy spaces by Magali Folch-Gabayet, Martha Guzmán-Partida, Salvador Pérez-Esteva

“…When the Banach space is a dual space X*, these spaces can be identified with the duals of the atomic vector-valued Hardy spaces HXp(ℝn), 0<p<1. …”
Get full text

Some Results of τ1τ2-δ Semiconnectedness and Compactness in Bitopological Spaces by M. Arunmaran, K. Kannan

“…That is, if a bitopological space (X,τ1,τ2) is τ1τ2-δ semiconnected, then the topological spaces (X,τ1) and (X,τ2) are δ-semiconnected. …”
Get full text

On some properties of Banach operators by A. B. Thaheem, AbdulRahim Khan

“…A mapping α from a normed space X into itself is called a Banach operator if there is a constant k such that 0≤k<1 and ‖α2(x)−α(x)‖≤k‖α(x)−x‖ for all x∈X. …”
Get full text

Universal flops of length 1 and 2 from D2-branes at surface singularities by Marina Moleti, Roberto Valandro

“…The geometry of the total space X of such a family can be encoded in a scalar field Φ, which lives in the corresponding ADE algebra and depends on the deformation parameters. …”
Get full text

On P- and p-Convexity of Banach Spaces by Omar Muñiz-Pérez

“…We show that every U-space and every Banach space X satisfying δX(1)>0 are P(3)-convex, and we study the nonuniform version of P-convexity, which we call p-convexity.…”
Get full text

Evolution semigroups for nonautonomous Cauchy problems by Gregor Nickel

“…In this paper, we characterize wellposedness of nonautonomous, linear Cauchy problems (NCP)  {u˙(t)=A(t)u(t)u(s)=x∈X on a Banach space X by the existence of certain evolution semigroups.…”
Get full text

Remarks on quadratic equations in Banach space by Ioannis K. Argyros

“…We find new sufficient conditions for the uniqueness of solutions of quadratic and in general multilinear equations in a Banach space X, by assuming the existence of a certain limit of linear operators in a suitable subspace of X.…”
Get full text

Coupled Fixed Point Theorems in Topological Spaces with Size Function Topology by Gun Sunyeekhan

“…Regarding the concept of size function topology, this allows us to view the topological space X as a metric-like space. We prove the existence and uniqueness for a coupled fixed point of the map F:X×X⟶X satisfying some certain contractive conditions.…”
Get full text

Coproximinality in the Space of Bounded Functions by Eyad Abu-Sirhan, Zuhier Altawallbeh

“…In this paper, we shall consider the relation between coproximinality of a nonempty subset M of a Banach space X and of C(S, M) in C(S, X).…”
Get full text