Results 11 to 20 of about 11,448,216 (76)

Algebraic reflexivity of isometry groups and automorphism groups of some operator structures [PDF]

open access: yes, 2013
We establish the algebraic re exivity of three isometry groups of operator structures: The group of all surjective isometries on the unitary group, the group of all surjective isometries on the set of all positive invertible operators equipped with ...
Botelho, Fernanda   +2 more
core   +2 more sources

Algebraic Methods for Finite Linear Cellular Automata [PDF]

open access: yes, 1996
PhDCellular automata are a simple class of extended dynamical systems which have been much studied in recent years. Linear cellular automata are the class of cellular automata most amenable to algebraic analytic treatments, algebraic techniques are ...
Dow, R. A.
core   +4 more sources

Linear free divisors and Frobenius manifolds [PDF]

open access: yes, 2009
We study linear functions on fibrations whose central fibre is a linear free divisor. We analyse the Gauß–Manin system associated to these functions, and prove the existence of a primitive and homogenous form.
Mond, David   +3 more
core   +1 more source

Rank of divisors on tropical curves [PDF]

open access: yes, 2013
We investigate, using purely combinatorial methods, structural and algorithmic properties of linear equivalence classes of divisors on tropical curves.
Králʼ, Daniel   +2 more
core   +1 more source

Isometries of the unitary groups and Thompson isometries of the spaces of invertible positive elements in C*-algebras [PDF]

open access: yes, 2014
We show that the existence of a surjective isometry (which is merely a distance preserving map) between the unitary groups of unital C*-algebras implies the existence of a Jordan *-isomorphism between the algebras.
Hatori, Osamu, Molnár, Lajos
core   +1 more source

On the number of Smarandache zero-divisors and Smarandache weak zero-divisors in loop rings [PDF]

open access: yes, 2005
Finding the number of Smarandache zero divisors (S-zero divisors) and Smarandache weak zero divisors (S-weak zero divisors) for the loop ...
Chetry, K. Moon, Vasantha, W.B.
core   +1 more source

Exceptional sequences of invertible sheaves on rational surfaces [PDF]

open access: yes, 2011
In this article we consider exceptional sequences of invertible sheaves on smooth complete rational surfaces. We show that to every such sequence one can associate a smooth complete toric surface in a canonical way. We use this structural result to prove
Lutz Hille, Markus Perling
core   +1 more source

Differential forms on free and almost free divisors [PDF]

open access: yes, 2000
We introduce a variant of the usual Kähler forms on singular free divisors, and show that it enjoys the same depth properties as Kähler forms on isolated hypersurface singularities.
Mond, D. (David)
core   +1 more source

On Higher Syzygies of Projective Toric Varieties [PDF]

open access: yes, 2006
Let A be an ample line bundle on a projective toric variety X of dimension n (≥ 2). It is known that the d-th tensor power A⊗d embedds X as a projectively normal variety in Pr := P(H0(X,L⊗d)) if d ≥ n − 1.
Shoetsu Ogata, Ogata, Shoetsu
core   +1 more source

The asymptotic Mahler measure of Gaussian periods

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.
Abstract We construct a sequence of cyclotomic integers (Gaussian periods) of particularly small Mahler measure/height. We study the asymptotics of their Mahler measure as a function of their conductor, to find that the growth rate is the (multivariate) Mahler measure of a family of log Calabi–Yau varieties of increasing dimension.
Gunther Cornelissen   +2 more
wiley   +1 more source

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