Results 11 to 20 of about 281 (181)

The universal tropicalization and the Berkovich analytification [PDF]

, 2022
summary:Given an integral scheme $X$ over a non-archimedean valued field $k$, we construct a universal closed embedding of $X$ into a $k$-scheme equipped with a model over the field with one element $\mathbb{F}_1$ (a generalization of a toric variety ...
Giansiracusa, Jeffrey, Giansiracusa, Noah   +1 more
core   +1 more source

Weighted PBW degenerations and tropical flag varieties [PDF]

, 2019
We study algebraic, combinatorial and geometric aspects of weighted PBW-type degenerations of (partial) flag varieties in type $A$. These degenerations are labeled by degree functions lying in an explicitly defined polyhedral cone, which can be ...
G. Fourier, I. Makhlin, X. Fang, E. Feigin, Fourier, G., Makhlin, I., Fang, X., Feigin, E.   +7 more
core   +1 more source

Distances on the tropical line determined by two points [PDF]

, 2014
summary:Let $p'$ and $q'$ be points in $\mathbb{R}^n$. Write $p'\sim q'$ if $p'-q'$ is a multiple of $(1,\ldots,1)$. Two different points $p$ and $q$ in $\mathbb{R}^n/\sim$ uniquely determine a tropical line $L(p,q)$ passing through them and stable under
Puente, María Jesús de la, Puente Muñoz, María Jesús De La   +1 more
core   +1 more source

Conceptualising quality early childhood education: Learning from young children in Brazil and South Africa through creative and play‐based methods

British Educational Research Journal, EarlyView., 2023
Abstract Early childhood has increasingly been acknowledged as a vital time for all children. Inclusive and quality education is part of the United Nations Sustainable Development Goals, with the further specification that all children have access to quality pre‐primary education.
Laura H. V. Wright, Irene Rizzini, Malibongwe Gwele, Lynn McNair, Cristina Laclette Porto, Marsha Orgill, E. Kay M. Tisdall, Malcolm Bush, Linda Biersteker   +8 more
wiley   +1 more source

Tropical Geometry of Curves [PDF]

, 2020
Algebraic geometry is a classical subject which studies shapes arising as zero sets of polynomial equations. Such objects, called varieties, may be quite complicated but many aspects of their geometry are governed by discrete data. In turn, combinatorial
Brandt, Madeline Virginia
core  

Tropical Teichmuller and Siegel spaces

, 2013
In this paper, we present a unified study of the moduli space of tropical curves and Outer space which we link via period maps to the moduli space of tropical abelian varieties and the space of positive definite quadratic forms.
CHAN M, MASCARENHAS MELO, ANA MARGARIDA, VIVIANI, FILIPPO   +2 more
core   +1 more source

Combinatorial aspects of total positivity [PDF]

, 2005
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2005.Includes bibliographical references (p. 115-119).In this thesis I study combinatorial aspects of an emerging field known as total positivity. The classical theory of total
Williams, Lauren Kiyomi
core  

Climate Change Threatens Micronutrient Density of European Winter Wheat

Advanced Science, EarlyView.
Micronutrients are vital for human health. Wheat is a major staple crop and a significant source of minerals and B‐vitamins. The impact of climate change on their content remains largely unknown. We evaluated micronutrient levels in European winter wheat grown under historical and projected climate conditions. Our findings indicate that future climates
Da Cao, Jennifer Michel, Eline Lorer, Markus Weinmann, Jacques Le Gouis, Claire Léon, Sibille Perrochon, David Alvarez, Vincent Leemans, Iñaki Balanzategui Guijarro, Jordi Moya Laraño, Sara Sánchez Moreno, Symanczik Sarah, Waibel Matthias, Hervé Vanderschuren, Cécile Thonar, Pierre Delaplace, Dominique Van Der Straeten   +17 more
wiley   +1 more source

Two Routes to Land: Genomic Underpinnings of Parallel Aerial Egg Deposition in Aquatic Old‐World Pila and New‐World Pomacea (Ampullariidae)

Advanced Science, EarlyView.
Comparative genomics of Gondwana‐diverged Pila and Pomacea reveals parallel evolution of aerial oviposition. Convergent chromosomal rearrangements reshape regulatory landscapes within topologically associating domains. Lineage‐specific gene family expansions and viral‐derived perivitelline proteins (PV1) underpin desiccation resistance.
Yufei Zhou, Huawei Mu, Xueying Nie, Yue Gao, Hui Wang, Ling Fang, Tiangang Luan, Monthon Ganmanee, Jian‐Wen Qiu, Jin Sun, Jack Chi‐Ho Ip   +10 more
wiley   +1 more source

ZDHHC18‐Mediated Palmitoylation of ORF3a Promotes SARS‐CoV‐2 Pathogenesis by Antagonizing TRIM16‐Mediated Ubiquitination and Proteasomal Degradation

Advanced Science, EarlyView.
Palmitoylation by ZDHHC18 blocks ORF3a K27‐linked ubiquitination mediated by TRIM16, thereby preventing its proteasomal degradation and strengthening viral pathogenesis. Targeting palmitoylation through a pharmacological inhibitor (2‐BP), a competitive inhibitory peptide (OPIP), or adenovirus‐mediated knockdown of ZDHHC18 expression presents a ...
Sidi Yang, Kun Li, Lihong Liu, Linsen Zeng, Qifeng Deng, Jiacheng Huang, Xiaoran Dong, Xin Wang, Jianwei Liang, Hongchao Liu, Hong Peng, Yuxin Lin, Xiaolu Xie, Yuzhen Ye, Tiefeng Xu, Zhaohuan Wang, Chun‐Mei Li, Deyin Guo   +17 more
wiley   +1 more source