Results 11 to 20 of about 159,428 (155)

Efficient Construction of Order-Preserving Encryption Using Pseudo Random Function

IEICE Transactions on Communications, 2015
Nam-Su Jho, Ku-Young Chang
exaly   +2 more sources

On order-preserving and order-reversing mappings defined on cones of convex functions [PDF]

Science China Mathematics, 2021
In this paper, we first show that for a Banach space $X$ there is a fully order reversing mapping $T$ from ${\rm conv}(X)$ (the cone of all extended real-valued lower semicontinuous proper convex functions defined on $X$) onto itself if and only if $X$ is reflexive and linearly isomorphic to its dual $X^*$.
Cheng, Lixin, Luo, Sijie
openaire   +3 more sources

Separation axioms in topological preordered spaces and the existence of continuous order-preserving functions

Applied General Topology, 2000
We characterize the existence of a real continuous order-preserving function on a topological preordered space, under the hypotheses that the topological space is normal and the preorder satisfies a strong continuity assumption, called IC-continuity ...
Gianni Bosi, R. Isler
doaj   +1 more source

Identification and Preservation of Pituitary Gland in Pituitary Surgery [PDF]

Al-Azhar International Medical Journal, 2022
Background: Suppressing hormone hyper-secretion, lowering tumour mass, preserving normal pituitary function, minimizing long-term effects from excess hormone production, and preventing tumour recurrence are all aims of pituitary tumour treatment ...
Islam Al Aghory, Abd Elkafy Sharafuddin, Mahamad Alhamshary   +2 more
doaj   +1 more source

Preservation theorems for Tarski's relation algebra [PDF]

Logical 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, Balder ten Cate, Brett McLean, Jan Van den Bussche   +3 more
doaj   +1 more source

Euler flag enumeration of Whitney stratified spaces [PDF]

Discrete 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, Mark Goresky, Margaret Readdy   +2 more
doaj   +1 more source

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

IEICE Transactions on Communications, 2016
Dongyoung Roh
exaly   +2 more sources

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

, 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

Mathematics, 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

On α-Layer Ideal Topologies

Advances 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