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In this paper, we study some topological characteristics of the n-normed spaces. We observe convergence sequences, closed sets, and bounded sets in the n-normed spaces using norms of quotient spaces that will be constructed. These norms…

Functional Analysis · Mathematics 2018-10-19 Harmanus Batkunde , Hendra Gunawan

We consider a weighted family of $n$ parallelly transported hyperplanes in a $k$-dimensioinal affine space and describe the characteristic variety of the Gauss-Manin differential equations for associated hypergeometric integrals. The…

Algebraic Geometry · Mathematics 2016-08-31 Alexander Varchenko

In this paper, we generalize the fractional order difference operator using $l$- Pochhammer symbol and define $l$- fractional difference operator. The $l$- fractional difference operator is further used to introduce a class of difference…

Functional Analysis · Mathematics 2018-06-28 Sanjay Kumar Mahto , P. D. Srivastava

We prove that several results of lineability/spaceability in the framework of sequence spaces are valid in a stricter sense.

Functional Analysis · Mathematics 2020-11-03 Daniel Pellegrino , Anselmo Raposo

In the context of commutative differential graded algebras over $\mathbb Q$, we show that an iteration of "odd spherical fibration" creates a "total space" commutative differential graded algebra with only odd degree cohomology. Then we…

Algebraic Topology · Mathematics 2017-06-27 Alexander Gorokhovsky , Dennis Sullivan , Zhizhang Xie

Recently, a geometrical characterization of vector spaces served to generalize them into a new class of algebras. Instead of the algebraic properties of the underlying fields, we generalized the recently discovered property of such spaces…

Algebraic Geometry · Mathematics 2019-01-23 Gabriele Ricci

We derive weighted summation identities involving the second order recurrence sequence $\{w_n\} =\{ w_n(a,b; p, q)\}$ defined by $w_0 = a,\,w_1 = b;\,w_n = pw_{n - 1} - qw_{n - 2}\, (n \ge 2)$, where $a$, $b$, $p$ and $q$ are arbitrary…

Number Theory · Mathematics 2018-04-13 Kunle Adegoke

In this chapter we study modal logics of topological spaces in the combined language with the derivational modality and the difference modality. We give axiomatizations and prove completeness for the following classes: all spaces,…

Logic · Mathematics 2014-05-27 Andrey Kudinov , Valentin Shehtman

We investigate algebraic structures within sets of surjective and injective linear operators between sequence spaces, completing results of Aron et al.

Functional Analysis · Mathematics 2020-07-14 Diogo Diniz , Vinícius Fávaro , Daniel Pellegrino , Anselmo Raposo

We prove a generalization of van der Corput's difference theorem for sequences of vectors in a Hilbert space. This generalization is obtained by establishing a connection between sequences of vectors in the first Hilbert space with a vector…

Dynamical Systems · Mathematics 2023-07-06 Sohail Farhangi

We relate a balancing property of letters for bi-infinite sequences to the invariance of the resulting 1-dimensional tiling dynamics under changes in the lengths of the tiles. If the language of the sequence space is finitely balanced, then…

Dynamical Systems · Mathematics 2015-03-25 Lorenzo Sadun

We first unify all notions of partial injectivity appearing in the literature ---(universal) separable injectivity, (universal) $\aleph$-injectivity --- in the notion of $(\alpha, \beta)$-injectivity ($(\alpha, \beta)_\lambda$-injectivity…

Functional Analysis · Mathematics 2017-08-15 Jesús M. F. Castillo , Yolanda Moreno

We give a full description of complete interpolating sequences for the shift-invariant space generated by the Gaussian. As a consequence, we rederive the known density conditions for sampling and interpolation.

Functional Analysis · Mathematics 2021-12-03 Anton Baranov , Yurii Belov , Karlheinz Gröchenig

Given two systems $P=(P_j(D))_{j=1}^N$ and $Q=(Q_j(D))_{j=1}^M$ of linear partial differential operators with constant coefficients, we consider the spaces ${\mathcal E}_\omega^P$ and ${\mathcal E}_\omega^Q$ of $\omega$-ultradifferentiable…

Functional Analysis · Mathematics 2017-01-12 Chiara Boiti , Rachid Chaïli , Tayeb Mahrouz

Any finite-dimensional commutative (associative) graded algebra with all nonzero homogeneous subspaces one-dimensional is defined by a symmetric coefficient matrix. This algebraic structure gives a basic kind of $A$-graded algebras…

Rings and Algebras · Mathematics 2026-03-23 Yunnan Li , Shi Yu

Wheeler emphasized the study of Superspace - the space of 3-geometries on a spatial manifold of fixed topology. This is a configuration space for GR; knowledge of configuration spaces is useful as regards dynamics and QM.In this Article I…

General Relativity and Quantum Cosmology · Physics 2015-05-15 Edward Anderson

We introduce the notion of a g-atomic subspace for a bounded linear operator and construct several useful resolutions of the identity operator on a Hilbert space using the theory of g-fusion frames. Also we shall describe the concept of…

Functional Analysis · Mathematics 2024-03-12 Prasenjit Ghosh , T. K. Samanta

We set up some foundations of generalised scheme theory related to new incompressible symmetric tensor categories. This is analogous to the relation between super schemes and the category of super vector spaces.

Algebraic Geometry · Mathematics 2023-11-07 Kevin Coulembier

The paper establishes generalization bounds for multitask deep neural networks using operator-theoretic techniques. The authors propose a tighter bound than those derived from conventional norm based methods by leveraging small condition…

Machine Learning · Computer Science 2026-05-29 Mahdi Mohammadigohari , Giuseppe Di Fatta , Giuseppe Nicosia , Panos M. Pardalos

In this paper we present the set of intervals as a normed vector space. We define also a four-dimensional associative algebra whose product gives the product of intervals in any cases. This approach allows to give a notion of divisibility…

Numerical Analysis · Computer Science 2009-10-22 Nicolas Goze , Elisabeth Remm