Results 31 to 40 of about 23,180 (297)

Algebraic cycles of a fixed degree [PDF]

open access: yesProceedings of the American Mathematical Society, 2010
In this paper, the homotopy groups of Chow variety C p ,
openaire   +2 more sources

On the arithmetic of del Pezzo surfaces of degree 2 [PDF]

open access: yes, 2004
We study the arithmetic of certain del Pezzo surfaces of degree 2. We produce examples of Brauer-Manin obstruction to the Hasse principle, coming from 2- and 4-torsion elements in the Brauer ...
Kresch, A.   +5 more
core   +1 more source

Similarity Degree of a Class of C $${^*}$$ ∗ -Algebras [PDF]

open access: yesIntegral Equations and Operator Theory, 2015
arXiv admin note: text overlap with arXiv:1407 ...
Wenhua Qian, Junhao Shen
openaire   +2 more sources

Necessary and sufficient conditions for the existence of invariant algebraic curves

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
We present a set of conditions enabling a polynomial system of ordinary differential equations in the plane to have invariant algebraic curves. These conditions are necessary and sufficient. Our main tools include factorizations over the field of Puiseux
Maria Demina
doaj   +1 more source

Solution to algebraic equations of degree~4 and the fundamental theorem of algebra by Carl Friedrich Gauss

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2022
Since Geronimo Cardano, algebraic equations of degree 4 have been solved analytically. Frequently, the solution algorithm is given in its entirety. We discovered two algorithms that lead to the same resolvente, each with two solutions; therefore, six ...
Norbert Südland   +2 more
doaj  

DEGREE OF SATISFIABILITY IN HEYTING ALGEBRAS

open access: yesThe Journal of Symbolic Logic
AbstractWe investigate degree of satisfiability questions in the context of Heyting algebras and intuitionistic logic. We classify all equations in one free variable with respect to finite satisfiability gap, and determine which common principles of classical logic in multiple free variables have finite satisfiability gap.
Benjamin Merlin Bumpus, Zoltan A. Kocsis
openaire   +3 more sources

A modified similarity degree for C*-algebras

open access: yesActa Scientiarum Mathematicarum, 2022
11 papes.
Hadwin, Don, Shen, Junhao
openaire   +2 more sources

Similarity Sorting Method for Retrieval Results of Linear Algebra Formula [PDF]

open access: yesJisuanji gongcheng, 2018
Compared with the general mathematical formula,linear algebra formula has more complex structure and richer syntax and semantics,so it is more difficult to achieve its retrieval.Through the analysis of linear algebraic retrieval,several matching modes of
SUN Mengying,TIAN Xuedong
doaj   +1 more source

The algebraic curves of planar polynomial differential systems with homogeneous nonlinearities

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
We consider planar polynomial systems of ordinary differential equations of the form $\dot x = x + P_n(x,y)$, $\dot y = y + Q_n(x,y)$, where $P_n(x,y),\ Q_n(x,y)$ are homogeneous polynomials of degree $n$.
Vladimir Cheresiz, Evgenii Volokitin
doaj   +1 more source

On the algebraic structure of Weihrauch degrees

open access: yesLogical Methods in Computer Science, 2018
We introduce two new operations (compositional products and implication) on Weihrauch degrees, and investigate the overall algebraic structure. The validity of the various distributivity laws is studied and forms the basis for a comparison with similar structures such as residuated lattices and concurrent Kleene algebras.
Vasco Brattka, Arno Pauly
openaire   +5 more sources

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