math.stackexchange.com的 10 大竞争对手

mathoverflow.net

Q&A for professional mathematicians

overleaf.com

An online LaTeX editor that’s easy to use. No installation, real-time collaboration, version control, hundreds of LaTeX templates, and more.

desmos.com

desmos offers best-in-class calculators, digital math activities, and curriculum to help every student love math and love learning math.

cuemath.com

Unlock your kid's math potential with Cuemath's Math Tutors. Our online math classes for Grade K-12 develop skills and confidence, ensuring academic success. Enroll Now!

symbolab.com

Practice Math, receive helpful hints, take a quiz, improve your math skills.

gradescope.com

Grade your existing paper-based assignments in half the time and see exactly what your students learned, for free.

mathworks.com

Contact MathWorks Support or browse support resources

arxiv.org

A system of non-tradable credits that flow between individuals like karma, hence proposed under that name, is a mechanism for repeated resource allocation that comes with attractive efficiency and fairness properties, in theory. In this study, we test karma in an online experiment in which human subjects repeatedly compete for a resource with time-varying and stochastic individual preferences or urgency to acquire the resource. We confirm that karma has significant and sustained welfare benefits even in a population with no prior training. We identify mechanism usage in contexts with sporadic high urgency, more so than with frequent moderate urgency, and implemented as a simple (binary) karma bidding scheme as particularly effective for welfare improvements: relatively larger aggregate efficiency gains are realized that are (almost) Pareto superior. These findings provide guidance for further testing and for future implementation plans of such mechanisms in the real world.

edstem.org

ed discussion helps scale course communication in a beautiful and intuitive interface. questions reach and benefit all students in the class. less email, more time saved.