Results 31 to 40 of about 26,897 (288)

Flag-Accurate Arrangements [PDF]

open access: yes, 2023
In [MR21], the first two authors introduced the notion of an accurate arrangement, a particular notion of freeness. In this paper, we consider a special subclass, where the property of accuracy stems from a flag of flats in the intersection lattice of ...
Röhrle, Gerhard   +2 more
core   +2 more sources

SelMa - Self-guided Learning in Teaching Mathematics

open access: yesInformatics in Education, 2004
In the project ``Self-guided Learning in Teaching Mathematics - SEC II'' (SelMa), five authoring schools are working out scenarios, media and materials for phases of self-guided learning, which will be tested systematically by 10 trial schools with ...
Wolfgang WEBER
doaj   +1 more source

Hyperfactored of Reflection Arrangement A�(G_25 ) [PDF]

open access: yesAl-Mustansiriyah Journal of Science, 2019
The purpose of this paper is to study the hyperfactored of the complex reflection arrangementA(G 25 ). Depending on the lattice of arrangement A(G 25 ), the basis of A(G 25 ) has been foundand then partitioned. Also, showed that A(G 25 ) is not hyperfactored and is not inductivelyfactored.
Raneen sabah haraj, Rabeaa AL-Aleyawee
openaire   +2 more sources

Restricting Invariants and Arrangements of Finite Complex Reflection Groups [PDF]

open access: yes, 2015
Suppose that G is a finite, unitary reflection group acting on a complex vector space V and X is a subspace of V. Define N to be the setwise stabilizer of X in G, Z to be the pointwise stabilizer, and C=N/Z.
Berardinelli, Angela
core   +1 more source

Réflexions sur la typologie des tombes à inhumation : restitution des dispositifs et interprétations chrono-culturelles

open access: yesArchéologie Médiévale, 2008
Methods of analysis in physical anthropology fieldwork constitute fundamental tools for reconstituting funerary architecture (grave pit features, modes of construction, body positioning and possible coffin arrangements).
Frédérique Blaizot
doaj   +1 more source

Some Almost Exceptional Arrangements [PDF]

open access: yes, 1993
We introduce and study a family of real hyperplane arrangements that includes the reflection arrangements of types A and D as well as an infinite family of arrangements E′n (constructed by Orlik, Solomon, and Terao) related to the exceptional ...
Ziegler, G.M., G.M. Ziegler
core   +1 more source

Euclidean matchings and minimality of hyperplane arrangements [PDF]

open access: yes, 2021
We construct a new class of maximal acyclic matchings on the Salvetti complex of a locally finite hyperplane arrangement. Using discrete Morse theory, we then obtain an explicit proof of the minimality of the complement.
Davide Lofano, Giovanni Paolini
core   +1 more source

Modular Equalities for Complex Reflection Arrangements

open access: yesDocumenta Mathematica, 2017
We compute the combinatorial Aomoto-Betti numbers \beta_{p}(\mathcal A) of a complex reflection arrangement. When \mathcal A has rank at least 3, we find that
Anca Daniela Mačinic   +2 more
openaire   +3 more sources

Measuring the Reflection Matrix of a Rough Surface

open access: yesApplied Sciences, 2017
Phase modulation methods for imaging around corners with reflectively scattered light required illumination of the occluded scene with a light source either in the scene or with direct line of sight to the scene. The RM (reflection matrix) allows control
Kenneth Burgi   +3 more
doaj   +1 more source

On the -problem for restrictions of complex reflection arrangements [PDF]

open access: yesCompositio Mathematica, 2020
Let $W\subset \operatorname{GL}(V)$ be a complex reflection group and $\mathscr{A ...
Nils Amend   +2 more
openaire   +1 more source

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