Four-dimensional, oriented Lie algebras g which satisfy the tame-compatible question of Donaldson for all almost complex structures J on g are completely described. As a consequence, examples are given of (non-unimodular) four-dimensional Lie algebras with almost complex structures which are tamed ...
On an almost quaternionic manifold (M-4n, Q) we study the integrability of almost complex structures which are compatible with the almost quaternionic structure Q. If n greater than or equal to 2, we prove that the existence of two compatible complex structures I-1, I-2 not equal +/-I...
XLForm has several types of selectors rows. Almost all of them need to know which are the values to be selected. For a particular XLFormRowDescriptor instance you specify these values setting a NSArray instance to selectorOptions property....
We consider a manifold M with a pseudo-Riemannian metric g and an almost product structure P such that g(P(X),P(Y )) = g(X,Y ). We suppose that the almost product structure P is parallel with respect to the Levi-Civita connection of g. T... JJ Konderak - 《Beitrage Zur Algebr...
The metamaterial structure comprises aperiodic Ge and ZnS multilayers grown on a quartz substrate and a topmost ZnS layer. The topmost ZnS layer is used for visible light camouflage, whereas the underlying Ge/ZnS multilayer was used for infrared camouflage. The thickness of the topmost ZnS layer ...
use custom class nest recursively for more complex structure use ArduinoJson for more flexible handling of JSON Use MsgPack with ArduinoJson you can [serialize / deserialize] StaticJsonDocument<N> and DynamicJsonDocument directly #include <ArduinoJson.h> // include before MsgPack.h #include <MsgP...
XLForm has several types of selectors rows. Almost all of them need to know which are the values to be selected. For a particular XLFormRowDescriptor instance you specify these values setting a NSArray instance to selectorOptions property....
Complex stroke path generation (Bezier cusp cases) conformance has been relaxed; Lighten and Darken blending modes have been made optional. “OpenVG 1.1 Lite enables fully-accelerated beautiful fonts, and high-quality vector graphics on almost any 3D GPU,” said Eisaku Ohbuchi, chair of the Op...
With Google Assistant, simply say "OK Google," followed by your favorite artist, album, song, or playlist, and your music will almost instantly start playing through your smart speaker. This is perfect for playing music in the kitchen when your hands are too messy to handle a phone or for...
almost - complex structure 殆复结构【川m侣t一~Plex sou侧比祀;一~~-。.旧crP卿ry种} 流形M上切空间的线性变换张量场I,它满足条件 I‘二一id,即切空Ib1不M(p〔M)的复结构(complex structuoe)的场.一个殆复结构I确定了切丛的复化T‘初的一个直和分解T〔M二F、十犷,这里F、和v分别是由仿射量(...