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Black Hole Attractor Varieties and Complex Multiplication [PDF]

open access: green, 2003
Black holes in string theory compactified on Calabi-Yau varieties a priori might be expected to have moduli dependent features. For example the entropy of the black hole might be expected to depend on the complex structure of the manifold.
M. Lynker   +2 more
core   +12 more sources

Some Mirror partners with Complex multiplication [PDF]

open access: green, 2010
In this note we provide examples of families of Calabi-Yau 3-manifolds over Shimura varieties, whose mirror families contain subfamilies over Shimura varieties.
Jan Christian Rohde
openalex   +4 more sources

The Cayley-Dickson Construction in ACL2 [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2017
The Cayley-Dickson Construction is a generalization of the familiar construction of the complex numbers from pairs of real numbers. The complex numbers can be viewed as two-dimensional vectors equipped with a multiplication. The construction can be used
John Cowles, Ruben Gamboa
doaj   +3 more sources

Complex Multiplication Tests for Elliptic Curves [PDF]

open access: green, 2004
We consider the problem of checking whether an elliptic curve defined over a given number field has complex multiplication. We study two polynomial time algorithms for this problem, one randomized and the other deterministic. The randomized algorithm can
Denis Charles
openalex   +4 more sources

A Rigorous Extension of the Schönhage-Strassen Integer Multiplication Algorithm Using Complex Interval Arithmetic [PDF]

open access: greenElectronic Proceedings in Theoretical Computer Science, 2010
Multiplication of n-digit integers by long multiplication requires O(n^2) operations and can be time-consuming. In 1970 A. Schoenhage and V. Strassen published an algorithm capable of performing the task with only O(n log(n)) arithmetic operations over ...
Thomas Steinke, Raazesh Sainudiin
doaj   +2 more sources

Complex multiplication, rationality and mirror symmetry for Abelian varieties [PDF]

open access: green, 2008
We show that complex multiplication on abelian varieties is equivalent to the existence of a constant rational K\"ahler metric. We give a sufficient condition for a mirror of an abelian variety of CM-type to be of CM-type as well.
Meng Chen
openalex   +4 more sources

Faster quantum subroutine for matrix chain multiplication via Chebyshev approximation [PDF]

open access: yesScientific Reports
Matrix operations are crucial to various computational tasks in various fields, and quantum computing offers a promising avenue to accelerate these operations. We present a quantum matrix multiplication (QMM) algorithm that employs amplitude encoding and
Xinying Li   +5 more
doaj   +2 more sources

Class fields generated by coordinates of elliptic curves

open access: yesOpen Mathematics, 2022
Let KK be an imaginary quadratic field different from Q(−1){\mathbb{Q}}\left(\sqrt{-1}) and Q(−3){\mathbb{Q}}\left(\sqrt{-3}). For a nontrivial integral ideal m{\mathfrak{m}} of KK, let Km{K}_{{\mathfrak{m}}} be the ray class field modulo m{\mathfrak{m}}.
Jung Ho Yun, Koo Ja Kyung, Shin Dong Hwa
doaj   +1 more source

Matrix Chain Multiplication and Equivalent Reduced-Order Parallel Calculation Method for a Robotic Arm

open access: yesApplied Sciences, 2023
Intelligence development has put forward increasing requirements of real-time planning and dynamic feedback in controlling robotic arms. It has become essential in engineering applications to complete the kinematics calculation of complex manipulators in
Jiyang Yu   +4 more
doaj   +1 more source

Level crossings, attractor points and complex multiplication

open access: yesJournal of High Energy Physics, 2023
We study the complex structure moduli dependence of the scalar Laplacian eigenmodes for one-parameter families of Calabi-Yau n-folds in ℙ n+1. It was previously observed that some eigenmodes get lighter while others get heavier as a function of these ...
Hamza Ahmed, Fabian Ruehle
doaj   +1 more source

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