43 research outputs found
Period Integrals of CY and General Type Complete Intersections
We develop a global Poincar\'e residue formula to study period integrals of
families of complex manifolds. For any compact complex manifold equipped
with a linear system of generically smooth CY hypersurfaces, the formula
expresses period integrals in terms of a canonical global meromorphic top form
on . Two important ingredients of our construction are the notion of a CY
principal bundle, and a classification of such rank one bundles. We also
generalize our construction to CY and general type complete intersections. When
is an algebraic manifold having a sufficiently large automorphism group
and is a linear representation of , we construct a holonomic D-module
that governs the period integrals. The construction is based in part on the
theory of tautological systems we have developed in the paper \cite{LSY1},
joint with R. Song. The approach allows us to explicitly describe a
Picard-Fuchs type system for complete intersection varieties of general types,
as well as CY, in any Fano variety, and in a homogeneous space in particular.
In addition, the approach provides a new perspective of old examples such as CY
complete intersections in a toric variety or partial flag variety.Comment: An erratum is included to correct Theorem 3.12 (Uniqueness of CY
structure
Reproductive biology of the pampas deer (Ozotoceros bezoarticus): a review
The pampas deer (Ozotoceros bezoarticus) is a South American grazing deer which is in extreme danger of extinction. Very little is known about the biology of the pampas deer. Moreover, most information has not been published in peer-reviewed scientific journals, and is only available in local publications, theses, etc. Therefore, our aim was to update and summarize the available information regarding the reproductive biology of the pampas deer. Moreover, in most sections, we have also included new, unpublished information. Detailed descriptions are provided of the anatomy of both the female and the male reproductive tract, puberty onset, the oestrous cycle and gestational length. Birthing and the early postpartum period are described, as are maternal behaviour and early fawn development, seasonal distribution of births, seasonal changes in male reproduction and antler cycle, reproductive behaviour, semen collection, and cryopreservation. Finally, an overview is given and future directions of research are proposed
Note on Micronecta sulcata (Signoret) [Heteroptera, Corixidae]
Jaczewski T. Note on Micronecta sulcata (Signoret) [Heteroptera, Corixidae]. In: Bulletin de la Société entomologique de France, volume 38 (19),1933. pp. 309-310
Comment on the proposals relating to Miris and Miridae (Insecta: Hemiptera). Z.N.(S.) 1090
Volume: 23Start Page: 131End Page: 13
Note on Micronecta sulcata (Signoret) [Heteroptera, Corixidae]
Jaczewski T. Note on Micronecta sulcata (Signoret) [Heteroptera, Corixidae]. In: Bulletin de la Société entomologique de France, volume 38 (19),1933. pp. 309-310
Comments on the proposed preservation Cymatiidae Iredale 1913. Z.N. (S.) 1939
Volume: 28Start Page: 14