Results 71 to 80 of about 7,271 (214)
A Characterization of Procyclic Groups via Complete Exterior Degree
MathematicsWe describe the nonabelian exterior square G∧^G of a pro-p-group G (with p arbitrary prime) in terms of quotients of free pro-p-groups, providing a new method of construction of G∧^G and new structural results for G∧^G.
Bernardo G. Rodrigues +1 more
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Geophysical Prospecting, Volume 74, Issue 4, May 2026.ABSTRACT The electrical resistivity tomography (ERT) is a geophysical method commonly used in mining exploration to reconstruct the subsurface resistivity. The associated inverse problem is typically addressed using deterministic approaches that minimize an objective function and guarantee fast convergence.
Alessandro Vinciguerra +2 more
wiley +1 more source
On the projective character tables of the maximal subgroups of M_11, M_12 and Aut(M_12) [PDF]
Advances in Group Theory and Applications, 2021 Abraham Love Prins
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Remark on Walter’s inequality for Schur multipliers [PDF]
Proceedings of the American Mathematical Society, 1989 We extend and give another proof of Walter’s inequality: For a linear operator T ∈
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Littlewood, Paley and almost‐orthogonality: a theory well ahead of its time
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract The classic paper by Littlewood and Paley [J. Lond. Math. Soc. (1), 6 (1931), 230–233] marked the birth of Littlewood–Paley theory. We discuss this paper and its impact from a historical perspective, include an outline of the results in the paper and their subsequent significance in relation to developments over the last century, and set them ...
Anthony Carbery
wiley +1 more source
An insertion algorithm for multiplying Demazure characters by Schur\n polynomials [PDF]
, 2021 Sami Assaf
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Entrywise transforms preserving matrix positivity and nonpositivity
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract We characterize real and complex functions which, when applied entrywise to square matrices, yield a positive definite matrix if and only if the original matrix is positive definite. We refer to these transformations as sign preservers. Compared to the classical work on entrywise preservers by Schoenberg and others, we completely resolve this ...
Dominique Guillot +3 more
wiley +1 more source
On Matsaev's conjecture for contractions on noncommutative $L^p$-spaces
, 2011 We exhibit large classes of contractions on noncommutative $L^p$-spaces which satisfy the noncommutative analogue of Matsaev's conjecture, introduced by Peller, in 1985.
Arhancet, Cédric
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Application of Group‐Theoretical Approaches in Structural Natural Frequency Analyses
International Journal for Numerical Methods in Engineering, Volume 127, Issue 7, 15 April 2026.ABSTRACT Group theory has profoundly advanced physics and chemistry in systems with symmetries. Yet its use in structural engineering applications has not yet been fully explored beyond the aesthetics of symmetric designs. This work addresses two significant gaps that have limited the broader adoption of group‐theoretic methods in structural vibration ...
Shiyao Sun, Kapil Khandelwal
wiley +1 more source
Linear Algebra and its Applications, 1995 This note deals with the characterization of the extremal \(m\times n\) matrices \(A\) for which the inequality due to \textit{G. Bennett} [Duke Math. J. 44, 603-639 (1977; Zbl 0389.47015)], \(\| A\|_{(p, q)}\leq \| A\|_{p, q}\) turns into an equality, where \(\| A\|_{p, q}= \sup\{\| Ax\|_ q: \| x\|_ p\leq 1\}\), \(\| A\|_{(p, q)}= \sup\{\| A\cdot B\|_{
openaire +2 more sources