Proposition 1.2 (Splitting Principle). Let E → M be a complex vector bundle of rank n over a manifold X. Then there is a manifold F (E) and a smooth fibration π : F (E) → M such that • The homomorphism π∗ : H∗(M, Z) → H∗(F (E), Z) is injective. • The bundle π∗E splits into a direct sum of complex line bundles, i.e. π∗E = l1 ⊕ · · ·⊕ ln Proof. Consider the projectivisation p : PC(E) → M and the ...

We propose a new definition of the elliptic genera for complete intersections, not necessarily nonsingular, in projective spaces. We also prove they coincide with the expressions obtained from Landau-Ginzburg model by an elementary argument.

a survey was conducted to study the fauna of the subfamily ophioninae (hymenoptera: ichneumonidae) in southern iranian provinces of fars and hormozgan. the specimens were collected using malaise traps, light traps and sweep nets from a variety different habitats between 2011 and 2013. a total of twelve species of three genera (enicospilus stephens; ophion fabricius and eremotylus forster) were ...

Using partial DNA sequence data from nuclear 28S and 18S genes and mitochondrial 16S and COI genes, we reconstructed a phylogeny of the family Eurytomidae. Both maximum parsimony and Bayesian methods were employed. The analysis revealed a significant incongruence between the mitochondrial genes and the nuclear genes, and we chose the results from the nuclear genes as our preferred hypothesis. O...

Published and personal records have been compiled into a reference list of the helminth parasites of guineafowls. Where data on other avian hosts was available these have been included for completeness' sake and to give an indication of host range. The parasite list for the Helmeted guineafowls, Numida meleagris, includes five species of acanthocephalans, all belonging to a single genus, three ...

tem. The phylogenetic analyses shewed that the genera Rh4ffomycas and Starmera were menophyletic and distant from each other and from the other species examined of the ascogenous teleomorphic genera, and that P. antillensis and P. caribaea were included within the clusters ef the genera I]hintromyces and Starmera, respectiyely. The two Pichia species were transferred to the genera Phafibmyces a...

The vascular anatomy of 13 of the 15 genera of the Hydrocharitaceae has been studied, and certain aspects of floral morphology are considered. The flowers of the family show a broad range of specialized structures combined with primitive characteristics. The origin of paired and single stamens is interpreted as probable modifications of fascicled stamens. Extreme reduction in the androccium is ...

Endophytes are considered as an important source of bioactive natural products because thesemicroorganisms are able to occupy unique biological niches and grow in non-ordinaryenvironments. Therefore, endophytic fungi of medicinal plants can be developed for medicinalapplications. On the other hand, medicinal properties of plant can be ascribed to its endophyticfungi. Thymus sp. is widely used a...

Keys to the males of the Dolichoderinae ant genera known from the Southwest Indian Ocean islands (Comoros, Madagascar, Mauritius, Mayotte, Reunion, and Seychelles) are provided. Diagnoses, discussion, illustrations, and a character matrix are provided for all five extant genera from the region: Aptinoma, Ochetellus, Ravavy, Tapinoma, and Technomyrmex. A male-based synopsis of the subfamily Doli...

Family Pentatomidae is represented by four subfamilies (Asopinae, Pentatominae, Phyllocephalinae and Podopinae) and 86 genera in south India. Pentatominae are the dominant group represented by 29 tribes and 72 genera. An illustrated key including the habitus of majority of genera as well as illustrations of important diagnostic features are given for the subfamilies, tribes and genera occurring...