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Foreign Fighter Returnees: An Indefinite Threat?
Terrorism and Political Violence, 2018How long does it typically take a returned foreign fighter to launch a domestic terror attack? The issue of returnees, and appropriate national and international responses to potential threats, has become a preeminent security concern of the 2010s ...
David Malet, Rachel Hayes
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BIT Numerical Mathematics, 2006
Let $A$ be a Hermitian positive definite matrix given by its rectangular factor $G$ such that $A = G^{; ; ; \ast}; ; ; G$. It is well known that the Cholesky factorization of $A$ is equivalent to the QR factorization of $G$. In this paper, an analogue of the QR factorization for Hermitian indefinite matrices is constructed.
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Let $A$ be a Hermitian positive definite matrix given by its rectangular factor $G$ such that $A = G^{; ; ; \ast}; ; ; G$. It is well known that the Cholesky factorization of $A$ is equivalent to the QR factorization of $G$. In this paper, an analogue of the QR factorization for Hermitian indefinite matrices is constructed.
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Indefinite theta series and generalized error functions
Selecta Mathematica, 2016Theta series for lattices with indefinite signature $$(n_+,n_-)$$(n+,n-) arise in many areas of mathematics including representation theory and enumerative algebraic geometry.
S. Alexandrov +3 more
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Abstract This chapter does not offer a complete survey of indefinites (determiner phrases (DPs) such as a boy, some girls, three women, etc.). Rather, it offers a selective discussion pivoted on the peculiar wide-scope properties of indefinites and also a seminal proposal for the explanation of such idiosyncrasy, which is that a choice ...
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Domain Decomposition Algorithms for Indefinite Elliptic Problems
SIAM Journal on Scientific Computing, 2017X. Cai, O. Widlund
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Solution of Sparse Indefinite Systems of Linear Equations
, 1975C. Paige, M. Saunders
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Indefinite causal order aids quantum depolarizing channel identification
Quantum Information Processing, 2019M. Frey
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