Results 61 to 70 of about 1,638,304 (120)

Complex symmetric weighted composition operators [PDF]

open access: yesarXiv, 2018
In this paper we find all complex symmetric weighted composition operators with special conjugations. Then we give spectral properties of these complex symmetric weighted composition operators.
arxiv  

On highly composite and similar numbers [PDF]

open access: bronze, 1944
L. Alaoglu, Paul Erdős
openalex   +1 more source

Compositional roots of Hénon maps [PDF]

open access: yesarXiv, 1995
Let $H$ denote a composition of complex H\'enon maps in {\bf C}$^2$. In this paper we show that the only possible compositional roots of $H$ are also compositions of H\'enon maps, and that $H$ can have compositional roots of only finitely many distinct orders.
arxiv  

The composition monoid and the composition algebra at q=0 of the Kronecker quiver [PDF]

open access: yesarXiv, 2003
We consider the Kronecker quiver and determine the relations for the specialisation to q=0 of the generic composition algebra as well as those for Reineke's composition monoid. We also obtain a normal form for the varieties occurring in the composition monoid in terms of Schur roots.
arxiv  

Reconstructing compositions [PDF]

open access: yesarXiv, 2006
We consider the problem of reconstructing compositions of an integer from their subcompositions, which was raised by Raykova (albeit disguised as a question about layered permutations). We show that every composition w of n\ge 3k+1 can be reconstructed from its set of k-deletions, i.e., the set of all compositions of n-k contained in w.
arxiv  

Tungsten fiber-reinforced copper composites form high strength electrical conductors [PDF]

open access: yes, 1966
Tungsten fiber-reinforced copper composites have tensile strength, yield strength, and modulus of elasticity proportional to fiber content.
Mc Danels, D. L., Signorelli, R. A.
core   +1 more source

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