Results 211 to 220 of about 639,311 (260)

A Rare Case of Anti-CASPR2 Encephalitis as the Presenting Manifestation of Hepatitis B Virus Infection. [PDF]

Ann Indian Acad Neurol
Pattnayak S, Swain A, Satapathy HS, Das M, Naik C.   +4 more
europepmc   +1 more source

Neural sequences underlying directed turning in Caenorhabditis elegans. [PDF]

Nat Neurosci
Kramer TS, Wan FK, Pugliese SM, Atanas AA, Pradhan S, Hiser AW, Godinez LM, Luo J, Bueno E, Felt T, Flavell SW.   +10 more
europepmc   +1 more source

When air-raid sirens howl the rate of visits of pregnant women to the obstetrical emergency room decreases: results of a 4-months wartime follow up in a tertiary medical center. [PDF]

BMC Pregnancy Childbirth
Shaham L, Blumenfeld S, Brenner N, Segal G, Simchen M, Cahan T, Zloto K, Sivan E, Weissmann-Brenner A.   +8 more
europepmc   +1 more source

Understanding the effect of educational attainment on the risk of retinal detachment: a Mendelian randomization mediation analysis. [PDF]

Int J Retina Vitreous
Katsimpris A, Baumeister SE, Baurecht H, Blaikie A, Goudie C, Tatham AJ, Nolde M.   +6 more
europepmc   +1 more source

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On the Validity of the Direct Sum Conjecture

SIAM Journal on Computing, 1986
The direct sum conjecture states that the multiplicative complexity of disjoint sets of bilinear computations is the sum of their separate multiplicative complexities. This conjecture is known to hold for only a few specialized cases. In this paper, we establish its validity for large classes of computations.
Jean Takche
exaly   +4 more sources

The direct sum of q-matroids

Journal of Algebraic Combinatorics
AbstractFor classical matroids, the direct sum is one of the most straightforward methods to make a new matroid out of existing ones. This paper defines a direct sum for q-matroids, the q-analogue of matroids. This is a lot less straightforward than in the classical case, as we will try to convince the reader.
Michela Ceria, Relinde Jurrius, Ceria Michela   +2 more
exaly   +3 more sources

Sum and direct sum of frame sequences

Linear and Multilinear Algebra, 2013
Casazza, Han and Larson characterized various properties of the direct sum of two frame sequences. We add characterizations of other properties and study the relationship between the direct sum and the sum of frame sequences. In particular, we find a necessary and sufficient condition for the sum of two strongly disjoint (orthogonal) frame sequences ...
Jae Kun Lim, Yoo Young Koo
exaly   +2 more sources

Representability of the direct sum of q-matroids

Journal of Algebraic Combinatorics
While there are many parallels between matroid theory and $q$-matroid theory, most notably on the level of cryptomorphisms, there are substantial differences when it comes to the direct sum. The direct sum of $q$-matroids has been introduced in the literature only recently.
Heide Gluesing-Luerssen
exaly   +5 more sources