Results 91 to 100 of about 30,222 (232)

Aggregation and the Structure of Value

Noûs, EarlyView.
ABSTRACT Roughly, the view I call “Additivism” sums up value across time and people. Given some standard assumptions, I show that Additivism follows from two principles. The first says that how lives align in time cannot, in itself, matter. The second says, roughly, that a world cannot be better unless it is better within some period or another.
Weng Kin San
wiley   +1 more source

Pairs of commuting integer matrices

Mathematische Annalen
Abstract We prove upper and lower bounds on the number of pairs of commuting $$n\times n$$ n × n
Browning, Tim, Sawin, Will, Wang, Victor Y.   +2 more
openaire   +2 more sources

Commutation Problems Involving Rings of Infinite Matrices [PDF]

Proceedings of the Edinburgh Mathematical Society, 1964
Let R be a ring and let J be the set of all integers. In the set M(R) of all mappings A: J×J→R, let addition and multiplication be defined byHere aij denotes the image of (i, j) under A and bij, cij, dij are similarly defined for the mappings B, C, D. In (2) we require A, B to be such that the sum is defined and is in R.
openaire   +2 more sources

The Mathematical History Behind the Granger–Johansen Representation Theorem

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT When can a vector time series that is integrated once (i.e., becomes stationary after taking first differences) be described in error correction form? The answer to this is provided by the Granger–Johansen representation theorem. From a mathematical point of view, the theorem can be viewed as essentially a statement concerning the geometry of ...
Johannes M. Schumacher
wiley   +1 more source

Five-dimensional SYM from undeformed ABJM

, 2011
We expand undeformed ABJM theory around the vacuum solution that was found in arxiv:0909.3101. This solution can be interpreted as a circle-bundle over a two-dimensional plane with a singularity at the origin.
A Gustavsson, A Gustavsson, Andreas Gustavsson, H Nastase, J Bagger, M Henningson, P Pasti, RP Andrews, S Terashima, S Terashima, T Banks, W Taylor, W Taylor   +12 more
core   +1 more source

Invariants of commuting matrices

, 2015
We comment two papers of Domokos and Vaccarino proving that the restriction to diagonal matrices of the scheme of commuting matrices is an isomorphism when restricted to invariants to the symmetric group invariants.
openaire   +2 more sources

On computing local monodromy and the numerical local irreducible decomposition

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract Similarly to the global case, the local structure of a holomorphic subvariety at a given point is described by its local irreducible decomposition. Geometrically, the key requirement for obtaining a local irreducible decomposition is to compute the local monodromy action of a generic linear projection at the given point, which is always well ...
Parker B. Edwards, Jonathan D. Hauenstein   +1 more
wiley   +1 more source

Rational points on even‐dimensional Fermat cubics

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract We show that even‐dimensional Fermat cubic hypersurfaces are rational over any field of characteristic not equal to three, by constructing explicit rational parameterizations with polynomials of low degree. As a byproduct of our rationality constructions, we obtain estimates for the number of their rational points over a number field and ...
Alex Massarenti
wiley   +1 more source

Representation of Solutions to a Two-Sided Matrix Delay Differential Equations

Axioms
In this paper, we investigate the representation of solution for the following linear matrix delayed differential equation Y˙(t)=A1Y(t)+Y(t)A2+BY(t−τ)+Y(t−τ)C+F(t),t∈[0,∞) where t is an independent variable, Y(t) is an n×n unknown variable matrix, τ>0 is
Zhenyu Bai, Chuanzhi Bai
doaj   +1 more source

Minimal deformations of the commutative algebra and the linear group GL(n)

, 1992
We consider the relations of generalized commutativity in the algebra of formal series $ M_q (x^i ) $, which conserve a tensor $ I_q $-grading and depend on parameters $ q(i,k) $ .
A. S. Shvarts, A. Schirrmacher, A. Schirrmacher, A. V. Zamolodchikov, B. M. Zupnik, D. A. Leites, D. I. Gurevich, F. A. Berezin, F. A. Smirnov, F. R. Gantmacher, J. Wess, L. D. Faddeev, M. V. Mosolova, P. P. Kulish, S. L. Woronovicz, V. G. Drinfel'd, V. S. Vladimirov, Yu. I. Manin   +17 more
core   +1 more source