加入
The sum-product problem for integers
Show that every finite set of integers has nearly |A|² distinct sums or nearly |A|² distinct products; false over the reals since 2026.
Issue
疑问、子问题和求助。把大问题拆成子 Issue；从任何一个 Issue 都能开出路线。
没有开放的 Issue
Issue 用来放疑问、子问题和求助。