Open problem

In science and mathematics, an open problem or an open question is a known problem which can be accurately stated, and which is assumed to have an objective and verifiable solution, but which has not yet been solved (no solution for it is known).

In the history of science, some of these supposed open problems were "solved" by means of showing that they were not, after all, well-defined. Many open problems in mathematics are in fact concerned with the question whether a certain definition is or is not consistent.

单词	Unresolved problem
释义	Unresolved problem 原声例句经济学人-财经 More also phoned back, an indication of unresolved problems. 再次回拨电话的次数也更多，表明还有问题尚未解决。人性的优点 No longer was there a worried sense of unresolved problems. 不再有未解决问题的忧虑感。英语百科 Open problem In science and mathematics, an open problem or an open question is a known problem which can be accurately stated, and which is assumed to have an objective and verifiable solution, but which has not yet been solved (no solution for it is known). In the history of science, some of these supposed open problems were "solved" by means of showing that they were not, after all, well-defined. Many open problems in mathematics are in fact concerned with the question whether a certain definition is or is not consistent.
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Unresolved problem

Open problem