Results 261 to 270 of about 695,402 (315)

Strategies to Enhance Ionic Conductivity of Na3Zr2Si2O12 Solid Electrolyte for Advanced Solid‐State Sodium Batteries

open access: yesCarbon Energy, EarlyView.
This review presents a comprehensive summary and discussion of some optimization strategies for enhancing room‐temperature ionic conductivity of Na3Zr2Si2PO12 (NZSP) solid electrolyte for solid‐state sodium batteries, including foreign‐ion doping or substitution, sintering behavior modulation, and regulation of chemical composition based on precursors.
Jiawen Hu   +5 more
wiley   +1 more source

The Ground-Set-Cost Budgeted Maximum Coverage Problem. [PDF]

open access: yesTheory Comput Syst
van Heuven van Staereling I   +2 more
europepmc   +1 more source

Constructive set theory with Markov's principle

open access: yesConstructive set theory with Markov's principle
openaire  

The natural numbers in constructive set theory

open access: closedMathematical Logic Quarterly, 2008
AbstractConstructive set theory started with Myhill's seminal 1975 article [8]. This paper will be concerned with axiomatizations of the natural numbers in constructive set theory discerned in [3], clarifying the deductive relationships between these axiomatizations and the strength of various weak constructive set theories.
Michael Rathjen
openalex   +2 more sources

Hereditarily Finite Sets in Constructive Type Theory

open access: closed, 2016
We axiomatize hereditarily finite sets in constructive type theory and show that all models of the axiomatization are isomorphic. The axiomatization takes the empty set and adjunction as primitives and comes with a strong induction principle. Based on the axiomatization, we construct the set operations of ZF and develop the basic theory of finite ...
Gert Smolka, Kathrin Stark
openalex   +2 more sources

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