/explore

Click through on any links that interest you or select the planets on the right to continue exploring the Outer Web.
You are here

billwadge.com
| | jdh.hamkins.org

Philosophy of Mathematics, Exam Paper 122, Oxford University Wednesdays 12-1 during term, Radcliffe Humanities Lecture Room Joel David Hamkins, Professor of Logic Lucy, Charles - Personifications o...
3.7 parsecs

Travel
| |
| | nickdrozd.github.io

Goedel's first incompleteness theorem is the claim that any sound, consistent formal system of sufficient power is incomplete; that is, there are statements in the language of the system that can neither be proved nor disproved. Traditionally the theorem is proved by exhbiting a statement g which is provably equivalent to a statement encoding its own disprovability in the system S.
3.4 parsecs

Travel
| |
| | blog.sigfpe.com


3.4 parsecs

Travel
| |
| | xorshammer.com

Consider the following argument for the existence of Santa Claus (which is called Curry's paradox): Let S be the sentence If S is true, then Santa Claus exists. Lemma: S is true. Proof. S is of the form ``If P, then Q.'' so to show S we just have to assume P and show Q....
10.9 parsecs

Travel
|