Results 81 to 90 of about 12,725 (235)

The Strong Nash‐Williams Orientation Theorem for Rayless Graphs

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT In 1960, Nash‐Williams proved his strong orientation theorem that every finite graph has an orientation in which the number of arc‐disjoint directed paths between any two vertices is at least half the number of undirected edge‐disjoint paths between them (rounded down).
Max Pitz, Jacob Stegemann
wiley   +1 more source

Menger空间中映象的不动点定理及应用

open access: yes四川大学学报. 自然科学版, 1986
本文分别就完备Menger空间和紧Menger空间中压缩映象给出了一些新的不动点定理,其中关于紧Menger空间中映象的不动点定理尚未见到最后作为应用举例,我们给出了Volterra型积分方程族的一个存在唯一性定理.
郑权
doaj  

From Karl Menger to Charles Menger? How Austrian economics (hardly) spread in France

open access: yesRussian Journal of Economics, 2018
The father of the “Austrian” Marginalist revolution and founder of the so-called “Austrian School of economics”, Carl Menger, had a mixed reception during different periods of development of French economics.
Gilles Campagnolo
doaj   +3 more sources

Controllable DNA Condensation by Mixed Cationic Gemini/Nonionic Surfactant Systems: Structure, Thermodynamics, and Cytotoxicity

open access: yesJournal of Surfactants and Detergents, EarlyView.
ABSTRACT Controllable DNA condensation is important for nucleic‐acid packaging and non‐viral gene‐delivery systems. This study aimed to determine how the composition of mixed nonionic C12E10 and cationic gemini C12C6C12Br2 surfactants regulates DNA condensation, structure, thermodynamics, and cytotoxicity.
Bo Wang   +3 more
wiley   +1 more source

On the Origins of Money

open access: yesMises, 2016
Resenha do Livro: On the Origins of Money Autor: Carl Menger ISBN: 978-14-79367-15 ...
Italo Bezerra de Meneses
doaj   +1 more source

Strategic search: Adaptation of internal fit and market positioning under competition

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Firms seeking competitive advantage need both internal fit and a distinctive market position, yet strategy research says little about how the search for the two is related. We develop a model of strategic search that integrates an NK landscape with differentiated Cournot competition, allowing a firm's position to shape both ...
Gianluigi Giustiziero   +2 more
wiley   +1 more source

Some Common Fixed Point Theorems in Menger PM Spaces

open access: yesFixed Point Theory and Applications, 2010
Employing the common property (E.A), we prove some common fixed point theorems for weakly compatible mappings via an implicit relation in Menger PM spaces. Some results on similar lines satisfying quasicontraction condition as well as -type contraction
Tanveer M, Hasan M, Imdad M
doaj  

La formación del corpus ideológico de Carl Menger (1871-1886)

open access: yesEstudios Sociales Contemporáneos, 2020
A fines del siglo XIX, en el contexto de las divergencias académicas y políticas entre Berlín y Viena se publica la obra "Principios de economía política", de Carl Menger, convirtiéndose en un documento fundador de un movimiento y, como un trabajo ...
Facundo Gustavo Corvalán
doaj  

When is a space Menger at infinity?

open access: yesApplied General Topology, 2015
We try to characterize those Tychonoff spaces X such that $\beta X\setminus X$ has the Menger property.
Leandro Fiorini Aurichi, Angelo Bella
doaj   +1 more source

A method to estimate actual infrastructure‐induced mortality by integrating hierarchical sources of imperfect detection

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Human infrastructures are among the most impactful wildlife threats. Although estimates of animal mortality by these structures exist over a given period, they typically do not account for several levels of imperfect detection (i.e. difference between recorded and true mortality).
Guillermo Gomez‐Peña   +6 more
wiley   +1 more source

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