Results 11 to 20 of about 56,648 (187)

Gradedness of the set of rook placements in $A_{n-1}$ [PDF]

open access: yes, 2021
summary:A rook placement is a subset of a root system consisting of positive roots with pairwise non-positive inner products. To each rook placement in a root system one can assign the coadjoint orbit of the Borel subgroup of a reductive algebraic group ...
Ignatev, Mikhail V.
core   +1 more source

M-level rook placements [PDF]

open access: yes, 2015
Rook theory focuses on placements of non-attacking rooks on boards of various shapes. An important role is played by the rook numbers which count the number of non-attacking placements of a given number of rooks on a board.
Barrese, Kenneth
core   +1 more source

Gradedness of the set of rook placements in An−1

open access: yes, 2021
A rook placement is a subset of a root system consisting of positive roots with pairwise non-positive inner products. To each rook placement in a root system one can assign the coadjoint orbit of the Borel subgroup of a reductive algebraic group with ...
Ignatev, Mikhail V.
core   +1 more source

Developing ODP student placements [PDF]

open access: yes, 2014
In a similar way to nursing and other health professions, elements of the education of operating department practitioners (ODPs) can only be contextualised by clinical practice involvement (Stockhausen and Strutt, 2005; Higginson, 2006; Morgan, 2006 ...
Brown, Steven
core   +1 more source

Bijection between Increasing Binary Trees and Rook Placements on Double Staircases

open access: yes, 2023
In this paper, we shall construct a bijection between rook placements on double staircases (introduced by Josuat-Verg\`es in 2017) and increasing binary trees.
Deb, Bishal
core   +1 more source

Rook placements in Young diagrams and permutation enumeration [PDF]

open access: yes, 2010
Given two operators Dˆ and Eˆ subject to the relation DˆEˆ−qEˆDˆ=p, and a word w in Dˆ and Eˆ, the rewriting of w in normal form is combinatorially described by rook placements in Young diagrams.
Josuat-Vergès, Matthieu
core   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Positroidal aspects of non-nesting rook placements

open access: yes
Rook matroids were recently introduced by the author and Alexandersson as matroids whose bases arise from certain restricted rook placements on a skew-shaped board. They were shown to be a subclass of transversal matroids and positroids.
Jal, Aryaman
core   +3 more sources

Problematising international placements as a site of intercultural learning [PDF]

open access: yes, 2014
This paper theorises some of the learning outcomes of a three-year project concerning student learning in international social work placements in Malaysia.
Carlo, D.P.   +12 more
core   +1 more source

Effect of Cu and CuP Additions on the Microstructure and Nanoindentation‐Based Fracture Behavior of CoNiAlSi Ferromagnetic Shape Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Cu and combined Cu–P microalloying refine the microstructure and enhance the nanoindentation‐derived fracture resistance of CoNiAlSi ferromagnetic shape memory alloys without suppressing the martensitic transformation. Comparative SEM, DSC, and nanoindentation results reveal that the CuP‐containing alloy provides the most balanced response, achieving ...
Mehmet Demir
wiley   +1 more source

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