Mathematicians Find Hidden Structure in a Common Type of Spa

In 50 years of searching, mathematicians found only one example of a “subspace design” that fit their criteria. A new proof reveals that there are infinitely more.

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Thomas Kirkman , Peter Keevash , Ashwin Sah , David Conlon , Mehtaab Sawhney , University Of Oxford , California Institute Of Technology , Massachusetts Institute Of Technology , Massachusetts Institute , California Institute , What Is Beyond Our , Quanta Magazine , Math , Mathematics , Puzzles ,