…In 1931, K. Gödel introduced a technique called arithmeticization of metamathematics, and showed that if a formal system S , which essentially includes the theory of natural numbers, is consistent, then S is incomplete (First Incompleteness Theorem). He proved this under the assumption of ω-consistency, which is a stronger condition than consistency, but later J.B. Rosser pointed out that the assumption of consistency was sufficient. This made it clear that it is impossible in principle to give a formal system of mathematics that is "complete" in the above sense. … *Some of the terminology that mentions "Rosser, JB" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…1931年,K.ゲーデルは超数学の算術化という手法を導入して,本質的に自然数論を含むような形式的体系Sが無矛盾であれば,Sは不完全であることを示した(第1不完全性定理)。彼は無矛盾よりも強い条件であるω‐無矛盾という仮定のもとでこれを証明したが,後にロッサーJ.B.Rosserは無矛盾という仮定で十分であることを指摘した。数学の上述の意味での〈完全〉な形式的体系を与えるということは,これにより原理的に不可能なことが明らかになった。… ※「Rosser,J.B.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
>>: Rossi, A. (English spelling) RossiA
...They have a large brood pouch on their abdomen...
Around 1325-82 French scholastic philosopher. Born...
[1917-1979] Korean soldier and politician. He led ...
...However, the old name Ostyak, derived from As-...
It refers to the process of evolutionary change t...
〘noun〙① The title of a book or literary work. Exte...
...However, when people belong to social groups w...
Cultivating crops on the same land more than twice...
…A general term for amphibians in the order Hynob...
A former town in Osato County in northern Saitama ...
The head temple of the Ritsu sect, located in Goj...
...The Broadcast Law stipulates that NHK "in...
...The stomach is divided into four chambers for ...
Okinawa Prefecture, Okinawa Islands are distribut...
...European oyster Ostrea edulis (English name: E...