初夏来临，2025年北京当代・艺术博览会在全国农业展览馆 11号馆如约而至。本届北京当代・艺术博览会以“凹凸”（CONCAVE-CONVEX）为主题，从 5月22日持续至5月25日，为这座城市带来了一场极具深度与广度的艺术盛会。这场汇聚全球艺术力量的盛会，不仅是艺术 ...

Are flat pedals better if the platform is convex? Concave? Why not both? While the internet argues about which pedal design provides the best grip and feel, OneUp has been testing prototypes of their ...

This project provides a simple API built with FastAPI that takes a list of 2D points and generates a concave hull (alpha shape) based on a given alpha value. The API returns the coordinates of the ...

Mirrors play an intеgral rolе in our daily livеs, еnabling us to sее oursеlvеs and thе world around us. Two common typеs of mirrors arе concavе mirrors and convеx mirrors, еach with ...

Difference between Concave vs Convex Lens: Isn’t physics one of those subjects that almost every student is scared of? Well why not, given the complexity of problems and difficulty level of the ...

Add a description, image, and links to the convex-concave-programming topic page so that developers can more easily learn about it.

Abstract: It is known that for a strictly concave-convex function, the gradient method introduced by Arrow and Hurwicz [1], has guaranteed global convergence to its saddle point. Nevertheless, there ...