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School Colloquium——Stable reduction of algebraic curves and abelian varieties
北大 algebraic curves abelian varieties
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2023/6/16
The stable reduction theorem was proved by Grothendieck for Abelian varieties and subsequently by Deligne and Mumford for projective curves.
Accelerator Report: Crescendo at the LHC following the first stable beams at 6.8 TeV（图）
加速器 6.8 TeV 稳定光束 大型强子对撞机
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2023/5/25
Late in the afternoon of Friday, 21 April, another important milestone was achieved in the LHC beam commissioning. At 6.58 p.m., one day ahead of schedule, the LHC Engineer in Charge declared “stable ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Stable nearly self-similar blowup of the 2D Boussinesq and 3D Euler equations with smooth data
平滑数据 二维布西内斯 三维欧拉方程 稳定近似 自相似爆炸
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2023/4/13
Whether the 3D incompressible Euler equations can develop a finite-time singularity from smooth initial data is an outstanding open problem. In this talk, we will first review recent progress in singu...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Stable commutator length and linear programming
换向器长度 线性规划 曲面 拓扑优化
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2023/4/18
Several topological optimization problems involving surfaces can be turned into linear programming problems. In the case of stable commutator length, this was first discovered by Danny Calegari in the...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Topological optimization and the stable commutator length
拓扑优化 稳定换向器 长度
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2023/4/19
It is a relatively recent discovery in geometric topology that optimization problems of certain topological complexity are connected to important geometric and topological information. One example is ...
Fruit flies use two muscles to control pitch for stable flight
果蝇 两块肌肉 稳定飞行 昆虫生理学
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2023/5/18
The flight of insects may look effortless but, as with any animal, their movements would be wildly uneven without an intricate system of neural signaling and muscle response to stabilize and steer the...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars： A decoupled, linear, and unconditionally energy stable finite element method for a two-phase ferrohydrodynamics model
两相铁流体 动力学模型 能量稳定 有限元方法
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2023/4/28
In this talk, we present numerical approximations of a phase-field model for two-phase ferrofluids, which consists of the Navier-Stokes equations, the Cahn-Hilliard equation, the magnetostatic equatio...
Decarbonizing your ride for a more stable climate（图）
Decarbonizing your ride more stable climate
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2020/2/28
Transportation produces a sizable amount of greenhouse gas emissions, largely by using petroleum to power internal combustion engines. Alternatives –- for example, organic materials such as grasses to...
Stable, strongly magnetized plasma jet created in laboratory（图）
Stable strongly magnetized plasma jet created laboratory
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2019/10/28
Scientists for the first time have created a particular form of coherent and magnetized plasma jet that could deepen understanding of larger plasma jets that stream from newborn stars and possibly bla...
What keeps ocean kelp forest ecosystems stable?（图）
keeps stable ocean kelp forest ecosystems
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2019/10/30
An ecosystem is made up of species, populations, communities, and a network of communities across a region.A team led by NSF-funded researchers at the University of California-Santa Barbara (UCSB) has...
A New Method Could Enable More Stable and Scalable Quantum Computing,Penn Physicists Report
Enable More Stable Scalable Quantum Computing Penn Physicists Report
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2017/7/24
Researchers from the University of Pennsylvania, in collaboration with Johns Hopkins University and Goucher College, have discovered a new topological material which may enable fault-tolerant quantum ...
400 million years of a stable relationship:clues to the molecular basis of balance in AM symbiosis
400 million years stable relationship molecular basis of balance AM symbiosis
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2017/4/27
Walking through a grassy field or forest take a moment to consider what lies beneath the surface. A web of plant roots interacts symbiotically with arbuscular mycorrhizal (AM) fungi that extend their ...
TSRI Scientists Create First Stable Semisynthetic Organism
TSRI Scientists First Stable Semisynthetic Organism
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2017/2/16
Life’s genetic code has only ever contained four natural bases. These bases pair up to form two “base pairs”—the rungs of the DNA ladder—and they have simply been rearranged to create bacteria and but...
The effects of fat loss after bariatric surgery on inflammation, serum hepcidin, and iron absorption: a prospective 6-mo iron stable isotope study
obesity iron deficiency iron absorption hepcidin inflammation stable isotopes
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2018/12/14
Background: Iron deficiency is common in obese subjects. This may be due to an increase in serum hepcidin and a decrease in iron absorption from adiposity-related inflammation.
A Strong Law of Large Numbers for Super-stable Processes
Super-stable process Super-Brownian motion Strong law of large Preprint submitted to Annals of Probability
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2016/1/25
A Strong Law of Large Numbers for Super-stable Processes.