A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.
Scoping review of EO-ML methods for causal inference in poverty geography.
Modeling poverty transitions in India over 54 years, showing rising but persistent poverty.
With a new deprivation (or poverty) function, in this paper, we theoretically study the changes in poverty with respect to the `global' mean and variance of the income distribution using Indian survey data. We show that when the income obeys a log-normal distribution, a rising mean income generally indicates a reductio…
Mapping the spatial distribution of poverty in developing countries remains an important and costly challenge. These "poverty maps" are key inputs for poverty targeting, public goods provision, political accountability, and impact evaluation, that are all the more important given the geographic dispersion of the remain…
Wariness affects poverty traps and equilibrium diversity in economic models.
We provide investment advice for an individual who wishes to minimize her lifetime poverty, with a penalty for bankruptcy or ruin. We measure poverty via a non-negative, non-increasing function of (running) wealth. Thus, the lower wealth falls and the longer wealth stays low, the greater the penalty. This paper general…
Subsidized insurance reduces poverty by providing social benefits and lowering government costs.
Spatial machine learning improves poverty targeting in Indonesia.
Fuel poverty affects between 50 and 125 million households in Europe and is a significant issue for both developed and developing countries globally. This means that fuel poor residents are unable to adequately warm their home and run the necessary energy services needed for lighting, cooking, hot water, and electrical…
Study analyzes household capital risk and poverty trapping, deriving a new function for capital deficit distribution.
In a recent work (Chattopadhyay, A. K. et al, Europhys. Lett. {\bf 91}, 58003, 2010) based on food consumption statistics, we showed how a stochastic agent based model could represent the time variation of the income distribution statistics in a developing economy, thereby defining an alternative \enquote{poverty index…
Model shows how capital accumulation can lead to poverty traps and well-being states.
With the rapid expansion of mobile phone networks in developing countries, large-scale graph machine learning has gained sudden relevance in the study of global poverty. Recent applications range from humanitarian response and poverty estimation to urban planning and epidemic containment. Yet the vast majority of compu…
New findings restrict Heegaard Floer homology for certain rational homology spheres.
The geography problem is usually stated for simply connected symplectic 4-manifolds. When the first cohomology is nontrivial, however, one can restate the problem taking into account how close the symplectic manifold is to satisfying the conclusion of the Hard Lefschetz Theorem, which is measured by a nonnegative integ…
The geography and botany of smooth/symplectic nonspin 4-manifolds with abelian fundamental group are addressed.
The geography of minimal symplectic 4-manifolds with arbitrary fundamental group and symplectic 6-manifolds with abelian fundamental group of small rank, and with arbitrary fundamental group are addressed.
In this note, the geography problem in dimension four is reviewed and then its extension to dimension six for the symplectic case is explained. Finally some examples in dimension six are provided.
Geography problem for nonorientable surfaces bounded by knots.
Study on 4-manifolds with positive scalar curvature.
We investigate the tendency for financial instruments to form clusters when there are multiple factors influencing the correlation structure. Specifically, we consider a stock portfolio which contains companies from different industrial sectors, located in several different countries. Both sector membership and geograp…
Study optimizes CT and microinsurance for efficient social protection in low-income countries.
Study examines how insurance affects households prone to proportional losses, especially those near poverty.
In this article we consider a version of the geography question for simply-connected symplectic 4-manifolds that takes into account the divisibility of the canonical class as an additional parameter. We also find new examples of 4-manifolds admitting several symplectic structures, inequivalent under deformation and sel…
Delisle's projection explained by Euler in 18th century.
We analyze a conservative market model for the competition among economic agents in a close society. A minimum dynamics ensures that the poorest agent has a chance to improve its economic welfare. After a transient, the system self-organizes into a critical state where the wealth distribution have a minimum threshold, …
We present a stochastic agent-based model for the distribution of personal incomes in a developing economy. We start with the assumption that incomes are determined both by individual labour and by stochastic effects of trading and investment. The income from personal effort alone is distributed about a mean, while the…
A new CA-GAN architecture improves minority class data generation in health datasets.
Discriminatory trade liberalization policies are becoming more popular among world economies. Countries are motivated to enter for regional trade agreements to capture faster economic growth for alleviating poverty. In developing economies like most of the member countries of the Association of South East Asian Nations…
This work aims to study the Portuguese regional agglomeration process, using the linear form the New Economic Geography models that emphasize the importance of spatial factors (distance, costs of transport and communication) in explaining of the concentration of economic activity in certain locations. In a theoretical …
Spin Lefschetz fibrations can represent any group and lattice point.
Khovanov homology invariant under Conway mutation.
The study creates symplectic Lefschetz fibrations and rational blowdowns for new 4-manifolds.
Questions of geography of various classes of -manifolds have been a central motivating question in -manifold topology. Baykur and Korkmaz asked which small, simply connected, minimal -manifolds admit a genus Lefschetz fibration. They were able to classify all the possible homeomorphism types and realize al…
Khovanov multicurves are restricted to linear components.
Lagrange's map construction ideas influenced later mathematicians.
Satellite imagery helps adjust for unobserved confounders in observational studies.
Describes the Teichmüller stack and its variants, answering questions about orbifold points and local models.
Paper analyzes factors affecting COVID-19 risk in US counties.
Poor economies not only produce less; they typically produce things that involve fewer inputs and fewer intermediate steps. Yet the supply chains of poor countries face more frequent disruptions---delivery failures, faulty parts, delays, power outages, theft, government failures---that systematically thwart the product…
New proof shows local wealth condensation in economic models with biases.
We describe a method to identify poor households in data-scarce countries by leveraging information contained in nationally representative household surveys. It employs standard statistical learning techniques---cross-validation and parameter regularization---which together reduce the extent to which the model is over-…
The world GDP distribution is described using thermodynamics principles.
The study explores relations between various knot invariants.
Many models of market dynamics make use of the idea of conservative wealth exchanges among economic agents. A few years ago an exchange model using extremal dynamics was developed and a very interesting result was obtained: a self-generated minimum wealth or poverty line. On the other hand, the wealth distribution exhi…
Paper introduces multi-scale methods to improve CATE estimation from EO data.
In this paper, results of J. Park and of B.D Park and Szabo on simply connected symplectic 4-manifolds are re-proven and extended to non-simply connected manifolds using Luttinger surgeries.
The paper characterizes Einstein 4-manifolds with semi-definite curvature and derives inequalities.