Results 21 to 30 of about 619,936 (293)

Function-Preserving Gastrectomy for Early Gastric Cancer [PDF]

open access: yes, 2021
Recently, minimally invasive (endoscopic or laparoscopic) treatment for early gastric cancer (EGC) has been widely accepted. However, a standard gastrectomy with radical lymphadenectomy is generally performed in patients with EGC who have no indications ...
Yoshihiro Hiramatsu   +2 more
core   +1 more source

Preservation theorems for Tarski's relation algebra [PDF]

open access: yesLogical Methods in Computer Science
We investigate a number of semantically defined fragments of Tarski's algebra of binary relations, including the function-preserving fragment. We address the question whether they are generated by a finite set of operations.
Bart Bogaerts   +3 more
doaj   +1 more source

Euler flag enumeration of Whitney stratified spaces [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
We show the $\mathrm{cd}$-index exists for Whitney stratified manifolds by extending the notion of a graded poset to that of a quasi-graded poset. This is a poset endowed with an order-preserving rank function and a weighted zeta function. This allows us
Richard Ehrenborg   +2 more
doaj   +1 more source

Comment on the Security of an Order-Preserving Encryption Scheme Using Pseudo-Random Function

open access: yesIEICE Transactions on Communications, 2016
Minkyu Kim, Je Hong Park, Dongyoung Roh
openaire   +3 more sources

New Algorithms for δγ-Order Preserving Matching [PDF]

open access: yes, 2018
Context: Order-preserving matching regards the relative order of strings. However, its application areas require more flexibility in the matching paradigm. We advance in this direction in this paper that extends our previous work [27]. Method: We define 
Yoan Pinzón   +11 more
core   +2 more sources

On Čech-completeness of the space of order-preserving functionals

open access: yes, 2012
In this paper we establish that if a Tychonoff space $X$ is Čech-complete then the space $O_τ(X)$ of all $τ$-smooth order-preserving, weakly additive and normed functionals is also Čech ...
Ayupov, Sh. A., Zaitov, A. A.
openaire   +4 more sources

Numerical Methods That Preserve a Lyapunov Function for Ordinary Differential Equations

open access: yesMathematics, 2022
The paper studies numerical methods that preserve a Lyapunov function of a dynamical system, i.e., numerical approximations whose energy decreases, just like in the original differential equation.
Yadira Hernández-Solano, Miguel Atencia
doaj   +1 more source

Generating function and volume preserving mappings [PDF]

open access: yes, 2014
In this paper, we study generating forms and generating functions for volume preserving mappings in Rn. We derive some parametric classes of volume preserving numerical schemes for divergence free vector fields.
Zanna, Antonella, Xue, Huiyan
core   +1 more source

On Functions Preserving Convergence of Series in Fuzzy n-Normed Spaces [PDF]

open access: yes, 2009
The purpose of this paper is to introduce finite convergence sequences and functions preserving convergence of series in fuzzy n-normed ...
Rahmat, Mohamad Rafi Segi, Elagan, Sayed
core   +1 more source

On α-Layer Ideal Topologies

open access: yesAdvances in Fuzzy Systems, 2012
The purpose of this paper is to study theory of two different kinds of α-layer order-preserving operator space, namely, ωα-opos and ωα*(ℑ)-opos. The former kind of space is formed by α-layer function in L-fuzzy order-preserving operator space.
Xiu-Yun Wu, Li-Li Xie
doaj   +1 more source

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