Results 171 to 180 of about 4,854 (294)

Some results restricting the mutual position of the components of a nonsingular real algebraic curve in $\mathbb{R}$P$^1 \times \mathbb{R}$P$^1$(Singularities of C$^\infty$ -maps and Contact Geometry)

, 1987
Sachiko Matsuoka
openalex   +1 more source

Limit Cycles of Continuous–Discontinuous Piecewise Linear Hamiltonian Systems in ℝ2 Separated by the Curve y=sinx

Mathematical Methods in the Applied Sciences, Volume 49, Issue 3, Page 2093-2097, February 2026.
ABSTRACT These last decades piecewise differential systems have been studied intensively, mainly due to their applications. Inside the study of the dynamics of these differential systems, the limit cycles, that is, the isolated periodic orbits inside the set of all periodic orbits of the system, play a main role.
N. Chachapoyas, Jaume Llibre, I. S. Meza‐Sarmiento, J. Vidarte   +3 more
wiley   +1 more source

Optical solutions to the time fractional Akbota equation arising in nonlinear optics via two distinct methods. [PDF]

Sci Rep
Mahmood SS, Boulaaras SM, Murad MAS, Malik S.   +3 more
europepmc   +1 more source

Geometry and algebra of real forms of complex curves [PDF]

, 1999
S. M. Natanzon
openalex   +1 more source

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, Jorge Delgado, J. M. Peña   +2 more
wiley   +1 more source

Exploration of the Predictive Validity of Middle School Math Screeners

Psychology in the Schools, Volume 63, Issue 2, Page 423-432, February 2026.
ABSTRACT Universal screening is a key element of multi‐tiered systems of support. Relative to literacy, fewer studies have investigated the psychometric properties of math assessments particularly amongst middle school students. We investigated whether outcomes from two types of curriculum‐based measures (CBMs), computational fluency (M‐COMP) and ...
Ethan R. Van Norman, David A. Klingbeil, Hannah K. Crespy   +2 more
wiley   +1 more source

Performance of optically tracked instrumented pointers: a systematic literature review. [PDF]

Biomed Eng Online
Rácz K, Seregély B, Kiss RM.
europepmc   +1 more source

A Comparison of the Validity of Growth Estimates From Early Math Curriculum Based Measures and a Computer Adaptive Test

Psychology in the Schools, Volume 63, Issue 2, Page 457-470, February 2026.
ABSTRACT This study compared the extent to which growth on two types of early math assessments (curriculum‐based measures [CBMs] and computer adaptive tests) predicted end of year performance in broad math skills as well as improvement in broad math skills in Kindergarten (n = 211) and Grade 1 (n = 79) students.
Ethan R. Van Norman, Kirsten J. Truman, Robin L. Hojnoski   +2 more
wiley   +1 more source

Optimizing noise control in flexible shells with bridging membrane discs variations. [PDF]

PLoS One
Alahmadi H, Afzal M, Alkuhayli N.
europepmc   +1 more source

Multi‐Objective Robust Controller Synthesis With Integral Quadratic Constraints in Discrete‐Time

International Journal of Robust and Nonlinear Control, Volume 36, Issue 3, Page 935-954, February 2026.
ABSTRACT This article presents a novel framework for the robust controller synthesis problem in discrete‐time systems using dynamic Integral Quadratic Constraints (IQCs). We present an algorithm to minimize closed‐loop performance measures such as the ℋ∞$$ {\mathscr{H}}_{\infty } $$‐norm, the energy‐to‐peak gain, the peak‐to‐peak gain, or a ...
Lukas Schwenkel, Johannes Köhler, Matthias A. Müller, Carsten W. Scherer, Frank Allgöwer   +4 more
wiley   +1 more source