Results 91 to 100 of about 4,797 (238)

Using Cu2+‐Centered Complexes as Glue: Two New Layered Polyoxotantalates Based on the Interconnection of the {Ta6O19} Moiety

open access: yesZeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 9, 3 June 2026.
Layered structures of polyoxotantalates generated by different connection modes of the dimeric {(Cu(dien))2Cu(Ta6O19)2} unit. Applying the three different solutions [Cu(dien)]2+ in DMSO/H2O, acetonitrile, and [Ta6O19]6‐/H2O in a layering approach, the two new polyxotantalates [Cu(dien)]5{(Cu(dien)(H2O)2)Cu(Ta6O19)2}·DMSO·32 H2O (I) and K2[(Cu(dien))6 ...
Dana‐Céline Krause   +2 more
wiley   +1 more source

On some aspects of mathematical platonism

open access: yes, 2015
Modern philosophers of mathematics in their discussions tend to refer to mathematical Platonism. Usually they believe that they talk about philosophical thought of Plato himself and understanding of mathematics that was introduced by the ancient ...
Dembiński, Bogdan
core  

Logika racjonalności. W stronę modalnego platonizmu matematycznego

open access: yesZagadnienia Filozoficzne w Nauce, 2011
In this article Whitehead’s philosophy of mathematics is characterized as a Structural Second-Order Platonism and it is demonstrated that the Whiteheadian ontology is consistent with modern formal approaches to the foundation of mathematics.
Piotr Wilczek
doaj  

Platonic surface

open access: yesCommentarii Mathematici Helvetici, 1999
If SO is a Riemann surface with a complete metric of finite area and constant curvature -1, let SC denote the conformal compactification of SO. We show that, under the assumption that the cusps of SO are large, there is a close relationship between the hyperbolic metrics on SO and SC. We use this relationship to show that
openaire   +3 more sources

Functionalizing Nucleobases With Boronic Acids and Boronic Acid Esters: Thymine Derivatives and Their Dioxazaborocane Chemistry

open access: yesChemPlusChem, Volume 91, Issue 6, June 2026.
Boronic acid‐substituted thymine derivatives are well established and exhibit a range of biological activities. In contrast, the corresponding boronic acid esters and dioxazaborocane analogs remain largely unexplored. Herein, we report the synthesis and structural characterization of thymine derivatives bearing boronic acid, boronic acid ester, and ...
Tabea Lenz   +2 more
wiley   +1 more source

Remarks on Mathematical Platonism

open access: yes, 2012
The mathematical Platonism is the most popular standpoint amongst mathematicians. The Platonism better than other conceptions explains the fact, that mathematicians discover some properties of the mathematical objects, which are independent of them and ...
Lemańska, Anna
core  

ANTI-LATIN WRITINGS OF GEORGE GEMISTOS PLETHON: TEXTS AND CONTEXT [PDF]

open access: yesВестник Екатеринбургской духовной семинарии
This article presents an analysis and translation with commentaries of the works of George Gemistos Plethon related to the anti-Latin polemic: his treatise against the book defending the Latin dogma and a letter to cardinal Bessarion with Plethon’s ...
Tatiana A. Senina
doaj   +1 more source

Synthesis, Crystal Structure, Hirshfeld Surface, RDG, ELF, LOL, DFT, and Molecular Docking Studies of a Binuclear Copper(II) Carboxylate Complex

open access: yesChemistryOpen, Volume 15, Issue 6, June 2026.
A binuclear copper(II) phenylacetate–metronidazole complex was successfully synthesized and structurally characterized. Hirshfeld surface analysis confirmed dominant H···H interactions governing crystal packing stability. DFT calculations demonstrated strong agreement with experimental geometry.
Abiodun Atoyebi Ajibola   +4 more
wiley   +1 more source

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