Schmidt's intersection conjecture for badly approximable sets

For weights (i,j)(i,j) with i,j0i,j\ge 0 and i+j=1i+j=1, let Bad(i,j)\mathbf{Bad}(i,j) denote the corresponding weighted badly approximable set in R2\mathbb{R}^2.

Schmidt's conjecture.

Bad(13,23)Bad(23,13).\mathbf{Bad}\left(\tfrac13,\tfrac23\right)\cap\mathbf{Bad}\left(\tfrac23,\tfrac13\right)\neq\varnothing.

This conjecture of Schmidt was resolved by a stronger theorem concerning intersections with vertical lines. It is therefore solved.

Sources & referencesView supporting material

Primary source

Victor Beresnevich, Felipe Ramírez and Sanju Velani, “Metric Diophantine Approximation: aspects of recent work”, arXiv:1601.01948 (2016).

Additional references

3 papers in this index state this conjecture (2009–2016). The statement above is taken from the most recent of them; the others are arXiv:1312.0386, arXiv:0910.3715.

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