ÐNormalization of slant and skew is often used in processing a word image before recognition. In this paper, we prove the theoretical equivalence of different methods for slant and skew corrections. In particular, we show that correcting first for skew by rotation and then for slant by a shear transformation in the horizontal direction is equivalent to first correcting for slant by a shear tran...

Elegant preclinical studies showed that T-cell immune synapse dysfunction in follicular lymphoma (FL) can be “repaired” with lenalidomide. Tumor-infiltrating T cells from FL patients had significant reduction in formation of the F-actin immune synapse vs healthy donor cells. Lenalidomide reversed these abnormalities by enhancing the immune synapse, an important finding also demonstrated in chro...

We consider separably closed fields of characteristic p > 0 and fixed Imperfection degree as modules over a skew polynomial ring. We axlotnatlze the correspondltlg theory and ue show that i t is complete and that ~t adnilts quantifier e l ~ n i ~ n a t ~ o n In the usual nlodule language augmented with additwe functions whlch are the analog of the p-component functions. $

The main ‘philosophical’ outcome of this article is to demonstrate that the structural description of residuated lattices requires the use of the co-residuated setting. A construction, called skew symmetrization, which generalizes the well-known representation of an ordered Abelian group obtained from the positive (or negative) cone of the algebra is introduced here. Its definition requires lea...

Let V be a vector space over a field F. The characteristic p of F is large if either p = 0 or p > dim V. When F is of large characteristic, the following questions, as well as their infinitesimal versions, are answered in this paper. Given an invertible linear map T : V → V, when does the vector space V admit a T -invariant non-degenerate symmetric (resp. skew-symmetric) biliner form? An elemen...

An association scheme is amorphous if it has as many fusion schemes as possible. Symmetric amorphous schemes were classified by A. V. Ivanov [A. V. Ivanov, Amorphous cellular rings II, in Investigations in algebraic theory of combinatorial objects, pages 39–49. VNIISI, Moscow, Institute for System Studies, 1985] and commutative amorphous schemes were classified by T. Ito, A. Munemasa and M. Yam...

We consider regularization of the parameters in multivariate linear regression models with the errors having a multivariate skew-t distribution. An iterative penalized likelihood procedure is proposed for constructing sparse estimators of both the regression coefficient and inverse scale matrices simultaneously. The sparsity is introduced through penalizing the negative log-likelihood by adding...

Consider options on a nonnegative underlying random variable with arbitrary distribution. In the absence of arbitrage, we show that at any maturity T , the large-strike tail of the Black-Scholes implied volatility skew is bounded by the square root of 2|x|/T , where x is log-moneyness. The smallest coefficient that can replace the 2 depends only on the number of finite moments in the underlying...

Let T = [0, 1) be the additive group of real numbers modulo 1, α ∈ T be an irrational number and t ∈ T. We consider skew product extensions of irrational rotations by Z 2 determined by T : T × Z 2 → T × Z 2 T (x, s 1 , s 2) = " x + α, s 1 + 2χ [0, 1 2) (x) − 1, s 2 + 2χ [0, 1 2) (x + t) − 1 «. We study ergodic components of such extensions and use the results to display irregularities in the un...