18,224 research outputs found
Remarks on monotone Lagrangians in
We derive some restrictions on the topology of a monotone Lagrangian
submanifold by making observations about the topology of
the moduli space of Maslov 2 holomorphic discs with boundary on and then
using Damian's theorem which gives conditions under which the evaluation map
from this moduli space to has nonzero degree. In particular we prove that
an orientable 3-manifold admits a monotone Lagrangian embedding in
only if it is a product, which is a variation on a theorem of
Fukaya. Finally we prove an h-principle for monotone Lagrangian immersions.Comment: 10 pages + 1 page corrigendum (correcting the statement and proof of
Proposition 12
Corrigendum to “Pollen-based paleoenvironmental and paleoclimatic change at Lake Ohrid (south-eastern Europe) during the past 500 ka” published in Biogeosciences, 13, 1423–1437, 2016
In this corrigendum we report an updated pollen record from the Lake Ohrid DEEP site spanning the past 500 ka whereby we have reprocessed and re-analyzed 104 samples affected by chemical procedure problems that occurred in one palynological laboratory. Firstly, these samples were affected by the use of wrong containers, causing in- adequate settling of particles at the set centrifuging speed. Secondly, HCl and HF treatments were combined without the prescribed intermediate centrifuging and decanting steps. The inaccuracy in the protocol resulted in the loss of smaller pollen grains and in the overrepresentation of bisaccate ones in most of the re-analyzed samples. We therefore provide an updated set of figures with the new data and have revised the description of the results, discussion and conclusions re- ported in Sadori et al. (2016) where necessary. We stress that the majority of the original results and conclusions remain valid, while the records’ reliability and resolution have improved as 12 samples that had been omitted in the original study because of low count sums are now included in the revised dataset (Sadori et al., 2018)
Corrigendum: Reliability and validation of the child eating behavior questionnaire in 3- to 6-year-old Spanish children
A corrigendum on Reliability and validation of the child eating behavior questionnaire in 3- to 6-year-old Spanish children by Jimeno-MartĂnez, A., Maneschy, I., Moreno, L. A., Bueno-Lozano, G., De Miguel-Etayo, P., Flores-Rojas, K., Jurado-Castro, J. M., de Lamas, C., Vázquez-Cobela, R., Martinez-Lacruz, R., Portoles, O., MartĂnez, J. A., Navas-Carretero, S., Schröder, H., FitĂł, M., Babio, N., Salas-SalvadĂł, J., Leis, R., Gil-Campos, M., and RupĂ©rez, A. I. (2022). Front. Psychol. 13:705912. doi: 10.3389/fpsyg.2022.70591
Misrepresenting the Jordan River Basin
This article advances a critique of the UN Economic and Social Commission for West Asia’s (ESCWA’s) representation of the Jordan River Basin, as contained in its recently published Inventory of Shared Water Resources in Western Asia. We argue that ESCWA’s representation of the Jordan Basin is marked by serious technical errors and a systematic bias in favour of one riparian, Israel, and against the Jordan River’s four Arab riparians. We demonstrate this in relation to ESCWA’s account of the political geography of the Jordan River Basin, which foregrounds Israel and its perspectives and narratives; in relation to hydrology, where Israel’s contribution to the basin is overstated, whilst that of Arab riparians is understated; and in relation to development and abstraction, where Israel’s transformation and use of the basin are underplayed, while Arab impacts are exaggerated. Taken together, this bundle of misrepresentations conveys the impression that it is Israel which is the main contributor to the Jordan River Basin, Arab riparians its chief exploiters. This impression is, we argue, not just false but also surprising, given that the Inventory is in the name of an organisation of Arab states. The evidence discussed here provides a striking illustration of how hegemonic hydro-political narratives are reproduced, including by actors other than basin hegemons themselves
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