Results 11 to 20 of about 156,641 (244)

VARIETIES OF SIGNATURE TENSORS

open access: yesForum of Mathematics, Sigma, 2019
The signature of a parametric curve is a sequence of tensors whose entries are iterated integrals. This construction is central to the theory of rough paths in stochastic analysis. It is examined here through the lens of algebraic geometry.
CARLOS AMÉNDOLA   +2 more
doaj   +1 more source

Domain Decomposition With Non-Conforming Polyhedral Grids

open access: yesIEEE Access, 2021
A novel mortar approach for the domain decomposition of field problems discretized in terms of nodal variables by the cell method is here proposed.
Federico Moro, Lorenzo Codecasa
doaj   +1 more source

Generating the bounded derived category and perfect ghosts [PDF]

open access: yes, 2011
We show, for a wide class of abelian categories relevant in representation theory and algebraic geometry, that the bounded derived categories have no non-trivial strongly finitely generated thick subcategories containing all perfect complexes.
Oppermann, Steffen, Stovicek, Jan
core   +1 more source

Feng-Rao decoding of primary codes [PDF]

open access: yes, 2012
We show that the Feng-Rao bound for dual codes and a similar bound by Andersen and Geil [H.E. Andersen and O. Geil, Evaluation codes from order domain theory, Finite Fields Appl., 14 (2008), pp.
Geil, Olav   +2 more
core   +4 more sources

Modelling, simulation and geometric optimization of cross flow recuperative heat exchanger based on controllability condition number [PDF]

open access: yesTehnika, 2017
This paper presents the algebraic mathematical model of cross - flow heat exchanger derived on the basis of transport approach. Theirs operation in the face of variable loads is usually controlled by manipulating inlet fluid temperatures or mass flow ...
Stević Dalibor   +2 more
doaj   +1 more source

Characteristic Number: Theory and Its Application to Shape Analysis

open access: yesAxioms, 2014
Geometric invariants are important for shape recognition and matching. Existing invariants in projective geometry are typically defined on the limited number (e.g., five for the classical cross-ratio) of collinear planar points and also lack the ability ...
Xin Fan   +5 more
doaj   +1 more source

SQCD: A Geometric Apercu [PDF]

open access: yes, 2008
We take new algebraic and geometric perspectives on the old subject of SQCD. We count chiral gauge invariant operators using generating functions, or Hilbert series, derived from the plethystic programme and the Molien-Weyl formula.
A. Butti   +34 more
core   +2 more sources

Birkhoff's Theorem from a geometric perspective: A simple example [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2016
‎From Hilbert's theorem of zeroes‎, ‎and from Noether's ideal theory‎, ‎Birkhoff derived certain algebraic concepts (as explained by Tholen) that have a dual significance in general toposes‎, ‎similar to their role in the original examples of algebraic ...
F. William Lawvere
doaj  

Analytical Approach for Orbital Evasion with Space Geometry Considered

open access: yesInternational Journal of Aerospace Engineering, 2017
This paper researches an optimal problem of orbital evasion with considering space geometry by using an analytical approach. Firstly, an angles-only relative navigation model is built and the definition of completely nonobservable maneuver is proposed ...
Dateng Yu   +3 more
doaj   +1 more source

Chern character, loop spaces and derived algebraic geometry. [PDF]

open access: yes, 2009
International audienceIn this note we present a work in progress whose main purpose is to establish a categorified version of sheaf theory. We present a notion of derived categorical sheaves, which is a categorified version of the notion of complexes of ...
A Neeman   +8 more
core   +4 more sources

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