Photograph of the Cluster M. 103 Cassiopei

Interaction of Prolin, Leucine and methylurea with inorganic cluster [(PO4)M12O36].nH2O; (M = Mo, W)

Three new inorganic-organic hybrid materials based on heteropolyoxometalates, [L-C6H14NO2]3[(PO4)Mo12O36].3H2O (1), [L-C5H10NO2]3[(PO4)W12O36].H2O (2), and [C2H7N2O]3[(PO4)W12O36]. 4H2O (3), where C6H14NO2, C5H10NO2, and C2H7N2O are protonated L-leucine, L-proline, and methylurea, respectively, have been synthesized and structurally characterized by some physico-chemical methods. Elemental anal...

A Musical Photograph?

The outermost cluster of M 31 ⋆

We report on the identification of a new cluster in the far halo of the M31 galaxy. The cluster, named Bologna 514 (B514) has an integrated magnitude M V = −8.5 ± 0.6, and a radial velocity, as estimated from two independent low-resolution spectra, V r = −456 ± 23 km/s, which fully confirms its membership to the M31 system. The observed integrated spectrum is very similar to those of classical ...

Interaction of Prolin, Leucine and methylurea with inorganic cluster [(PO4)M12O36].nH2O; (M = Mo, W)

Abstract- Three new inorganic-organic hybrid materials based on heteropolyoxometalates, [L-C6H14NO2]3[(PO4)Mo12O36].3H2O (1), [L-C5H10NO2]3[(PO4)W12O36].H2O (2), and [C2H7N2O]3[...

M-cluster Categories and M-replicated Algebras

Let A be a hereditary algebra over an algebraically closed field. We prove that an exact fundamental domain for the m-cluster category Cm(A) of A is the m-left part Lm(A (m)) of the m-replicated algebra of A. Moreover, we obtain a one-toone correspondence between the tilting objects in Cm(A) (that is, the m-clusters) and those tilting modules in modA(m) for which all non projective-injective di...