Results 11 to 20 of about 4,502 (97)

Effective Matsusaka's Theorem for surfaces in characteristic p

, 2015
We obtain an effective version of Matsusaka's theorem for arbitrary smooth algebraic surfaces in positive characteristic, which provides an effective bound on the multiple which makes an ample line bundle D very ample. The proof for pathological surfaces
Di Cerbo, Gabriele, Fanelli, Andrea
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Properties and Construction of Polar Codes [PDF]

, 2010
Recently, Ar{\i}kan introduced the method of channel polarization on which one can construct efficient capacity-achieving codes, called polar codes, for any binary discrete memoryless channel. In the thesis, we show that decoding algorithm of polar codes,
Mori, Ryuhei
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On the Relationship Between the Critical Temperature and the London Penetration Depth in Layered Organic Superconductors

, 2004
We present an analysis of previously published measurements of the London penetration depth of layered organic superconductors. The predictions of the BCS theory of superconductivity are shown to disagree with the measured zero temperature, in plane ...
Anderson P W, Andraka B, B J Powell, Blezius J, Carlson E W Emery V J Kivelson S A Orgad D, Caulfield J, Chandrasekhar B S, deSoto S M, Dressel M, Jujo T, Kino H, Kivelson S A, Kondo H, Kovalev A E Hill S Qualls J S, Lang M, Laughlin R, McKenzie R H, Mielke C H, Mielke C H, Nakazawa Y, Pedron D, Polisskii A, Pratt F L, Ross H McKenzie, Scalapino D J, Tinkham M, Tsuei C C, Urayama H, Williams J M, Wosnitza J   +29 more
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A Witt Nadel vanishing theorem for threefolds

, 2019
In this paper, we establish a vanishing theorem of Nadel type for the Witt multiplier ideals on threefolds over perfect fields of characteristic larger than five.
Nakamura, Yusuke, Tanaka, Hiromu
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How to Construct Polar Codes

, 2013
A method for efficiently constructing polar codes is presented and analyzed. Although polar codes are explicitly defined, straightforward construction is intractable since the resulting polar bit-channels have an output alphabet that grows exponentially ...
Tal, Ido, Vardy, Alexander
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The X-method for klt surfaces in positive characteristic [PDF]

, 2012
In this paper, we establish a weak version of the Kodaira vanishing theorem for surfaces in positive characteristic. As an application, we obtain some fundamental theorems in the minimal model theory for klt surfaces.Comment: 24 pages, v2:minor revision ...
Tanaka, Hiromu
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On relative rational chain connectedness of threefolds with anti-big canonical divisors in positive characteristics

, 2016
In this paper we prove two results about the rational chain connectedness for klt threefolds with anti-big canonical divisors in the relative setting.Comment: Minor changes in the statements of the main theorems.
Wang, Yuan
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Chebyshev interpolation for functions with endpoint singularities via exponential and double-exponential transforms [PDF]

, 2012
We present five theorems concerning the asymptotic convergence rates of Chebyshev interpolation applied to functions transplanted to either a semi-infinite or an infinite interval under exponential or double-exponential transformations.
Richardson, Mark
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Loop Calculus for Non-Binary Alphabets using Concepts from Information Geometry [PDF]

, 2014
The Bethe approximation is a well-known approximation of the partition function used in statistical physics. Recently, an equality relating the partition function and its Bethe approximation was obtained for graphical models with binary variables by ...
Mori, Ryuhei
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Boundedness of regular del Pezzo surfaces over imperfect fields

, 2019
For a regular del Pezzo surface $X$, we prove that $|-12K_X|$ is very ample. Furthermore, we also give an explicit upper bound for the volume $K_X^2$ which depends only on its thickening exponent $\epsilon(X/k)$.
Tanaka, Hiromu
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