Suat AyözProblem for May 17th from the 2026 AMS Daily Epsilon of Math Calendar
Zach SteindlerI'm unreasonably proud that I remembered enough square packing to fit 10 quart containers in a milk crate that's slightly larger than a 3x3 packing. #mathstodon
Problem for May 16th from the 2026 AMS Daily Epsilon of Math Calendar
Problem for May 15th from the 2026 AMS Daily Epsilon of Math Calendar
Problem for May 14th from the 2026 AMS Daily Epsilon of Math Calendar
Problem for May 13th from the 2026 AMS Daily Epsilon of Math Calendar
Problem for May 12th from the 2026 AMS Daily Epsilon of Math Calendar
Dan HattonVan Dyke (1964, _Perturbation methods in fluid mechanics_, Academic Press) says, of co-ordinate perturbation expansion solutions to differential equations: "The resulting series, though not necessarily convergent, is by construction an asymptotic expansion." Is he implying that building such a perturbation series is, in itself, sufficient to prove the asymptoticity of that series to an exact solution? If so, is he right?
Problem for May 11th from the 2026 AMS Daily Epsilon of Math Calendar
Problem for May 10th from the 2026 AMS Daily Epsilon of Math Calendar
