Index's helpful guide to local events, programs and more this week in the Tri-Cities. Read THE DIGEST for free for the ...

A tricky maths brain teaser shared on X left users stumped, sparking debates and frustration over the correct answer.

We proved that all the usual things are equivalent to the axiom of choice: Zorn’s lemma, the well ordering principle, cardinal comparability (given two sets, one must inject into the other), and the ...

Zolie Pin, 11, center, stands with her parents, Chanty and Erendira Pin, on Oct. 2, 2024, in the children's section of the ...