Results 101 to 110 of about 91,509 (288)
Bidiagonal Decompositions and Accurate Computations for the Ballot Table and the Fibonacci Matrix
Numerical Linear Algebra with Applications, Volume 33, Issue 1, February 2026.ABSTRACT Riordan arrays include many important examples of matrices. Here we consider the ballot table and the Fibonacci matrix. For finite truncations of these Riordan arrays, we obtain bidiagonal decompositions. Using them, algorithms to solve key linear algebra problems for ballot tables and Fibonacci matrices with high relative accuracy are derived.
Jorge Ballarín +2 more
wiley +1 more source
Cohomological supports of tensor products of modules over commutative rings [PDF]
, 2022 Srikanth B. Iyengar +2 more
openalex +1 more source
Commutative monoid rings as Hilbert rings [PDF]
Proceedings of the American Mathematical Society, 1985 Assume that R is a commutative unitary ring and that S is a cancellative monoid with quotient group G. Let \(\alpha\) be the torsion-free rank of G and let \(X=\{X_ i\}\) be a set of \(\alpha\) indeterminates over R. We prove that the monoid ring R[S], the group ring R[G], and the polynomial ring R[X] are simultaneously Hilbert rings. In particular, if
openaire +2 more sources
Definition and Computation of Tensor‐Based Generalized Function Composition
Numerical Linear Algebra with Applications, Volume 33, Issue 1, February 2026.ABSTRACT Functions are fundamental to mathematics as they offer a structured and analytical framework to express relations between variables. While scalar and matrix‐based functions are well‐established, higher‐order tensor‐based functions have not been as extensively explored.
Remy Boyer
wiley +1 more source
Earth's Future, Volume 14, Issue 2, February 2026.Abstract Future projections of climate change are uncertain, in part because of uncertainty in future greenhouse gas emissions. However, current widely used emission scenarios and related physical climate projections have no probabilities associated with them, presenting a challenge for risk‐informed climate adaptation decision making.
Jeremy Fyke, Neil C. Swart, David Huard
wiley +1 more source
Artinian-finitary groups over commutative rings [PDF]
, 2003 B. A. F. Wehrfritz
openalex +1 more source
On the Noisy Road to Open Quantum Dynamics: The Place of Stochastic Hamiltonians
Annalen der Physik, Volume 538, Issue 1, January 2026.Stochastic Hamiltonian formulations of open quantum dynamics are revisited, highlighting their roots in stochastic calculus. The connections among stochastic Hamiltonians, stochastic Schrödinger equations, and master‐equation approaches are made explicit.
Pietro De Checchi +3 more
wiley +1 more source
The deformation theory of sheaves of commutative rings [PDF]
, 2011 Jonathan Wise
openalex +1 more source
Electroanalysis, Volume 38, Issue 1, January 2026.A preconcentration method for Pb2+ coupling solid‐phase extraction (SPE) using SiO2/TiO2/ Sb2O5 with a portable 3D‐printed electrochemical microcell was developed. A multivariate optimization using a fractional factorial design 24‐1 with a central point was carried out.
Diego Prudencio dos Santos +6 more
wiley +1 more source
A note on co-maximal graphs of commutative rings
AKCE International Journal of Graphs and Combinatorics, 2018 Let R be a commutative ring with unity. The co-maximal graph Γ ( R ) is the graph with vertex set R and two vertices a and b are adjacent if R a + R b = R .
Deepa Sinha, Anita Kumari Rao
doaj +1 more source