Some articles on cardinal invariants, cardinal invariant, cardinal, invariant, invariants:
Axioms Of Set Theory - Areas of Study - Cardinal Invariants
... A cardinal invariant is a property of the real line measured by a cardinal number ... For example, a well-studied invariant is the smallest cardinality of a collection of meagre sets of reals whose union is the entire real line ... These are invariants in the sense that any two isomorphic models of set theory must give the same cardinal for each invariant ...
... A cardinal invariant is a property of the real line measured by a cardinal number ... For example, a well-studied invariant is the smallest cardinality of a collection of meagre sets of reals whose union is the entire real line ... These are invariants in the sense that any two isomorphic models of set theory must give the same cardinal for each invariant ...
Famous quotes containing the word cardinal:
“What people dont realize is that intimacy has its conventions as well as ordinary social intercourse. There are three cardinal rulesdont take somebody elses boyfriend unless youve been specifically invited to do so, dont take a drink without being asked, and keep a scrupulous accounting in financial matters.”
—W.H. (Wystan Hugh)
Main Site Subjects
Related Phrases
Related Words