e/Hilbert's nineteenth problem

Information
has gloss	eng: Hilbert's nineteenth problem is one of the 23 Hilbert problems set out in a celebrated list compiled in 1900 by David Hilbert. It asks whether the solutions of Lagrangians are always analytic. Sergei Natanovich Bernstein showed the answer is yes in his doctoral dissertation submitted to the Sorbonne in 1904, subject to some additional hypotheses.
lexicalization	eng: Hilbert's nineteenth problem
instance of	e/Hilbert's problems

Meaning
Chinese
has gloss	zho: 希爾伯特第十九問題，是一個有關於變分法的問題，尤其是有關於位勢方程正則性的問題
lexicalization	zho: 希爾伯特第十九問題