Category:未解決問題
Template:未解決問題
Template:Unsolved problems情報理論上の未解決問題
List of unsolved problems in information theory
地球科学上の未解決問題
List of unsolved problems in geoscience
統計学上の未解決問題
List of unsolved problems in statistics
経済学上の未解決問題
List of unsolved problems in economics未解決問題
Lists of unsolved problems
医学上の未解決問題
Unsolved problems in medicine
天文学上の未解決問題
List of unsolved problems in astronomy
懸賞金問題
Inducement prize contest
哲学上の未解決問題
List of philosophical problems