نتایج جستجو برای: z0
تعداد نتایج: 978 فیلتر نتایج به سال:
There is a canonical homomorphism ψ : π1(bdyX)→ π∞ 1 (X) from the fundamental group of the visual boundary, here denoted by bdy X, of any non-positively curved geodesic space X into its fundamental group at infinity. In this setting, the latter group coincides with the first shape homotopy group of the visual boundary: π∞ 1 (X) ≡ π̌1(bdy X). The induced homomorphism φ : π1(bdy X)→ π̌1(bdy X) prov...
We say that a simple graph G is Seidel integral if its spectrum consists entirely of integers. If ?Ka,a ? ?Kb,b integral, we show it belongs the class graphs [kt/? x0 + mt/?z]Ka,a y0 a/?z]nKb,b, where (i) = (t+?n)k+?m and b ?m; (ii) t, k, ?,m, n N such (m, n) 1, (n, t) 1 (?, 1; (iii) (a,mt) | kt; (iv) (x0, y0) particular solution linear Diophantine equation ax (mt)y (v) z z0 least integer (kt/?...
The interaction force gradient between a micron-size polystyrene sphere and an atomically flat highly oriented pyrolytic graphite substrate has been analyzed as a function of surface-to-surface separation distance z0 using an oscillating cantilever technique. The interaction force gradient was found to have two contributions. For z0>30 nm, an electrostatic force due to charges trapped on the po...
It is shown that, for solid caps D of heat balls in Rd+1 with center z0 = (0, 0), there exist Borel measurable functions w on D such that inf w(D) > 0 and ∫ v(z)w(z) dz ≤ v(z0), for every supertemperature v on a neighborhood of D. This disproves a conjecture by N. Suzuki and N.A. Watson. On the other hand, it turns out that there is no such volume mean density, if the bounded domain D in Rd × (...
In an engaging and thoughtful article in this issue Carol Brock (Brock, 2016) of the University of Kentucky puts forward a typically insightful, modestly understated and detailed analysis of some of the organizing principles behind crystal structures with high Z0. Did I lose your interest already? It sounds obscure doesn’t it? Some crystallographic parameter . . . a few odd, niche structures. W...
We calculate the rate of production of W + Υ and Z0 + Υ in hadron colliders. We find the cross sections for W + Υ and Z0 + Υ to be roughly 0.45 pb and 0.15 pb at the Tevatron and roughly 4 pb and 2 pb at the LHC. The dominant production mechanism involves the binding of a color-octet bb̄ pair into a P-wave bottomonium state which subsequently decays into Υ. The purely leptonic decay modes of Υ, ...
We present the first direct measurement of A(s), the parity-violating coupling of the Z0 boson to the strange quark, using approximately 550 000 e(+)e(-)-->Z0-->hadrons events recorded by the SLC Large Detector with a polarized e(-) beam. We tagged Z0-->s&smacr; events by the absence of B or D hadrons and the presence in each hemisphere of a high momentum K+/- or K(0)(s). Fitting the polar angl...
The standard model for the Semi Definite Programming (SDP) is min c T x s.t. F (x) = F 0 + m i=1 x i F i 0, where each of the F i 's are symmetric matrices. We define the Lagrangian: L(x, Z) = c T x − Tr(ZF (x)), where the dual variable Z is a psd matrix. The Lagrangian is constructed so that max Z0 L(x, Z) = c T x if F (x) 0, +∞ otherwise. Thus, we can express p * as the solution to an unconst...
در نگاه اول نوترینوهای ناشی از جریان های خنثی یا واپاشی z0 به علت اینکه شار یکسان برای هر سه نسل نوترینو می دهند، نوسان نمی کند. با این وجود ذات اسپین و اسمینوف نشان دادند که در صورتی که هم نوترینو و هم پادنوترینو آشکارسازی شوند یک نوع جدید نوسان نوترینو قابل مشاهده است. در این پایان نامه با استفاده از رهیافت بسته موج به این مسئله دوباره نگاه می شود و از این طریق یک شرط جدید برای دیدن این نوسان...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید